They are short-lived compounds that kill all life stages of grubs. Look on the Internet for ‘Heteromask,’ ‘Nemasys G’ or Buglogical Control Systems. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. The preventive compound chlorantraniliprole should ideally be applied in April or May to control grubs that would be damaging turf in the fall as it will take longer for the material to move to where the grubs will be feeding in July. Do not use preventive compounds such as clothianidin, thiamethoxam or imidacloprid now. There are different recommended timings for application depending on the active ingredient. European chafers are generally found in drier turf and their population levels will fluctuate depending upon how wet or dry the weather was the previous summer. Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. Neither of the products listed grubs on the label printed on the bag and neither of the products would have controlled grubs. It is important to realize that healthy turf, supported by frequent rain or irrigation, can support a grub population of five or more grubs per square foot with no visible turf damage. David Smitley, Terry Davis and Erica Hotchkiss, Michigan State University, Department of Entomology - Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. Healthy turf with a few grubs may not need an insecticide. Michael WillsonWillson's Garden CenterPetoskey, MI 49770. Chlorantraniliprole can be applied as early as April and up to mid-July. Finding one or two grubs does not indicate you need to apply a grub control product. Current research also shows that watering with 0.5 inches of irrigation immediately after the application is essential to get effective results from these insecticides. Japanese beetle grubs also feed on turf roots in home lawns, but they are not usually as much of a problem on home lawns as European chafers can be. Wisconsin, Minnesota and Iowa have now joined the club of Midwest states with lots of Japanese beetles, and they have been found in isolated locations as far west as Colorado. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Chlorantraniliprole applied in April will not work on spring grubs that are already present when it is applied. The eggs of both species hatch about 10 days after they are laid. The standard, and highly effective, grub control insecticides are products that contain imidacloprid, clothianidin or thiomethoxam. Bayer Grub Control vs. Grub Killer Plus. Dylox (Active ingredient: Trichlorfon) Widely used by professionals, Dylox kills grubs after they are in their third instar. Two different types of chemicals are used at different times of the year for different targets, preventives and curatives. To kill grubs in the spring or fall, use carbaryl or trichlorfon. This article was published by Michigan State University Extension. If the need should arise to use a curative compound, make sure to keep the infested lawn watered and fertilized and treat the area again with a preventive application the next summer or the problem will likely reoccur in the fall or the following spring. … ... GrubEx or Dylox… The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. Preventive products are the most effective. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). When watered properly, this product can even penetrate … Entomol. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May. This article was published by Michigan State University Extension. Dylox … To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). More research is needed on this, but it could cause problems for native bees or have long-term health effects on honey bees or bumble bees. The nematodes may not kill as many grubs as the standard insecticide products, but they persist a long time and may even infect grubs for several years after they are applied. Unfortunately, the Milky Spore product you asked about did not provide any grub control in the first year of a test we are conducting at Old Channel Trail Golf Course near Ludington, Mich. We plan to continue this test for two more years. Use them in June or July to control grubs that would be damaging turf in the fall. Unfortunately, there are not any biological control products that you can purchase at the garden center that will give the same level of control as the standard insecticide products. These all look similar and feed on the tender roots of turf. For more information, visit https://extension.msu.edu. We don’t seem to be getting as many calls about lawns damaged by Japanese beetle grubs in the southern half of the Lower Peninsula, south of Lansing, but we are getting more calls from the northern Lower Peninsula as Japanese beetles continue to spread northward. The Bayer 24 Hour Grub Killer contains DYLOX… A half-inch of irrigation is when lawn sprinklers are run until a container like a coffee mug, or several mugs, fills to a level 0.5 inches up from the bottom of the cup. Check out the MSU Turfgrass Management - Golf Course Certificate Program! At one garden center a clerk showed us two products, one containing only permethrin and one containing only bifenthrin, when we asked for products to control grubs. I went to several of the local lawn and garden centers in the Lansing, Michigan, area to see what kinds of products are available that specifically claim they will work to control grubs. Be sure the problem is grubs. Bayer Advanced Season-Long Grub Control (or Bayer Advanced Merit) - Granular, Bayer Advanced Season-Long Grub Control and Turf Revitalizer - Granular, Premium Grub Control (Do not confuse with “Premium Insect Control”), Bayer Advanced Complete Insect Killer Liquid attach-to-hose-bottle, Bayer Advanced Complete Insect Killer Granules - Granular, Bayer Advanced 24 hr Grub Killer Plus - Granular, Spectracide Triazicide Insect Killer for Lawns - Granular. There are also products for sale that list grubs on the label that do NOT work for grubs. Before doing anything, it is important to make sure the problem is grubs. Carefully check the label for ingredients. They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. They are preventive products that work very well on newly hatched grubs present in July, but do not work well for large grubs found from September to May. There are many products available, some with the same active ingredients. MSU is an affirmative-action, equal-opportunity employer. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). 1995. 88: 846-854. There is another active ingredient in some insecticides called chlorantraniliprole that will also work in preventing grub problems, but it is less water soluble than the other preventive compounds mentioned above, so it can be applied any time after the grass turns green in the spring. Check the bag or bottle to determine what active ingredient the product contains. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. Check out all the Grubs and insects controlled by these 2 products. I … You can find my answer below. If customers ask about the safety of standard neonicotinoid grub control products (imidacloprid, clothianidin and thiomethoxam) for honey bees and pollinators, you can tell them that if the lawn is mowed before the insecticide is applied that it will be safe for honey bees because no open flowers (flowering weeds) will be present when the lawn is treated. Grub Sprays vs. Granules. Insecticides used for grubs can be separated into two groups based on how they work: preventive chemicals and curative chemicals. It is best to apply the nematodes when grubs are present and when the soil temperature is above 50 degrees Fahrenheit. Lawns with a large, dense root system are much less likely to be damaged by grubs, and it is much more difficult for skunks and raccoons to dig and turn-over turf with a healthy root system. For more detailed information, on this go to the Michigan State University Turf website and see the grub control bulletin posted there. They can be abundant in non-irrigated home lawns if we receive frequent rain in July, but are scarce in lawns that are very dry in July and early August. A lawn should be mowed at 3 to 4 inches in height and properly fertilized for maximum root growth. April 1, 2014. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. A garden center owner asks about alternatives to standard grub control insecticides. If you order or purchase a live nematode product for grubs, make sure you buy a Heterorhabditis nematode and not a Steinernema or another type of nematode. beetleGONE! Granular vs Liquid Grub Killer; Grub killer vs grub preventer; ... GrubEx is made using the active ingredient called chlorantraniliprole. However, as European chafers and Japanese beetles have spread northward, lawns and other low maintenance turf areas in much of the Lower Peninsula north of Lansing and in the eastern half of the Upper Peninsula are seeing more damage. You don’t have to wait until your lawn becomes infested with grubs before you apply a grub killer, you can always use a… Store insecticide products in a locked cabinet not accessible to children. If there is nothing flowering in the lawn, there is nothing in it that would attract bees. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. If you see a dead patch, use a shovel to dig up a few Frisbee-size samples of turf around the bare spot to a depth of 2 inches and look for 0.75-inch long, C-shaped white grubs. Dylox 6.2 works by both contact and ingestion. You can do this by following Michigan State University Extension’s recommendations of setting your lawn mower at the highest clipping height (3-4 inches); applying at least 2.5 pounds of actual N per 1,000 square feet of lawn per year using a slow-release fertilizer several times each year; watering during dry periods; and returning grass clippings and chopped leaves to the lawn instead of collecting and removing them. Sometimes the best offense is the best defense. & grubGONE! It was considered to be a successful effort because populations of Japanese beetle decreased 10-fold or more at most sites within five years of when the spore powder was distributed. Products containing imidacloprid, thiamethoxam, clothianidin or chlorantraniloprole will not control grubs in the spring. It kills 25% more grub types vs. original GrubEx. Chemical Action and Usages: Dylox is an organophosphate insecticide in a granular form for use on lawns to control mole crickets, sod webworms, cutworms, grubs and other listed insects in turf. Grub damage may appear in home lawns from mid-September to November or from March to early May. Visit the Gardening in Michigan website to find a series of Smart Gardening bulletins that include one on fertilizer basics and mowing high for grub and weed control. Potter. However, Japanese beetles could become common in Petoskey over the next 10 years. It contains only lambda-cyhalothrin or gamma-cyhalothrin. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. *What is 0.5 inches of irrigation? Use the right rate/amount of product. Is the grub population here in northern Michigan likely to be other than from the Japanese beetle? Water the lawn immediately after applying the insecticide. The outbreak phase where turf damage is common may last five to 10 years. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. May 22, 2020. Have there been any studies done on its effectiveness? There are no scientific studies conducted at any university that I know of where the Milky Spore product that is now available provided adequate grub control. It will take 10-14 days for the grubs to begin dying after the insecticide is applied. Lawn sprinklers can be used if you do not have an irrigation system. Products containing only these ingredients will not work for grub control because the active ingredient binds with organic material and will not move down to where the grubs are feeding. Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. These products are used to prevent future grub problems, not to control the grubs present in the lawn in the spring. For quick kill now, Dylox (trichlorfon) is considered most effective with Sevin (carbaryl) as second. It is … Our research indicates they will kill 20-80% of grubs when applied in September or 20-55% when applied in late October. Regionally, European chafers are a much bigger problem than they used to be. By the time damage is … Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. As a professional lawn care service we get a lot of questions about lawn maintenance. If you are applying a product containing clothianidin, thiamethoxam or imidacloprid, the lawn should be mowed prior to the application so that no weeds are flowering in the lawn when the insecticide is applied. The grubs feed from the beginning of August until late October. One of the most common questions we get from late Spring … Both Bayer Advanced Grub Control and Bayer Advanced Grub Killer Plus are marketed to those battling with turf-destroying white grubs. Use specified dosage of DYLOX 420 SL … This information is for educational purposes only. Protecting bees and other pollinators. I will put grubex down next spring as a preventer, I just needed something to kill the grubs now. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. These products work well for above-ground feeding insects that live on the grass leaves or soil surface, but not for insects that feed on the roots. Potter. Kills on contact: active ingredient Dylox kills grubs on contact. The product’s effects lasts for up to four months. DYLOX 420 SL Turf and Ornamental Insecticide is a soluble concentrate, which dissolves readily in water and is suitable for use in all power-operated ground sprayers. Also, in the last two years several products have become available in an attach-to-hose bottle and are automatically mixed with water when applied. This material is based upon work supported by the USDA and the National Institute of Food and Agriculture award number(s) 2014-70006-22498. Preventive controls include the neonicotinoids and chlorantraniliprole, but the timing for each approach is very different.The label directions for most neonicotinoids (products containing chlothianidin, imidacloprid, or thiamethoxam) indicate they should be applied \"when females are laying eggs\". Make sure to irrigate the lawn with at least. By the time I did further research and bought the BioAdvanced Grub Killer (due to having The label lists the legal rate at which the product can be used. This is a highly effective systemic insecticide that kills the target pests by both contact and ingestion. Scotts GrubEx Grub Killer and Preventer . According to Cornell University, the milky spore organism, Paenibacillus popilliae, was the focus of a huge Japanese beetle biocontrol program 60 to 70 years ago, with over 100 tons of spore powder distributed throughout Pennsylvania, Ohio and surrounding states where Japanese beetle occurred at the time. If you have treated for several years and you do not see evidence of grubs in your lawn or in the neighbor’s lawn, it may be time to stop treating. vs. Here’s how to choose and use the right one for your lawn. Now it has spread throughout Ohio, Michigan (all of the Lower and half of the Upper Peninsula), northern Indiana and into eastern Illinois. When the ground warms up in spring, they resume feeding and can cause damage from the time the grass turns green until they pupate in mid-May. In addition, grub control products that contain the active ingredient chlorantraniliprole are safe for bees, even when weed flowers are sprayed. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon. We have had questions from our customers at our garden center here in Petoskey about the Milky Spore granular product by St. Gabriel Laboratories and I am having a hard time getting the facts. You can measure how much irrigation is applied by putting out several coffee cups in your lawn and run the irrigation until they fill to a half-inch level above the bottom. Research tests over the last 25 years have clearly shown that watering immediately after application helps to obtain good results. You can do this by putting a pinch of nematodes in a glass of water at room temperature for 10 minutes and check to see if they are wiggling. J. Econ. A third concern is the rate at which the insecticide is applied. One trichlorfon product has “24 Hour Grub Control” in its name and would seem to indicate that it will kill grubs in 24 hours. I received this email question about alternative grub control insecticides. Check the active ingredients. The second major concern is to make sure the insecticide is thoroughly watered into the ground with at least a half-inch of irrigation or rain immediately after the chemical is applied. They are not as effective as the preventive compounds in reducing grub numbers. By the end of October, they are fully grown. Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. However, that is ancient history now, and there are three reasons why the Milky Spore product which can be purchased at garden centers may not be appropriate for a home lawn treatment: Although Japanese beetles have been found near you in Petoskey, it is more likely that people in your area will have June beetle grubs or European chafer grubs. Always wear rubber gloves and rubber boots when applying insecticides to turfgrass. However, even trichlorfon should not be evaluated for at least five days after application (assuming it rains or irrigation was applied), and carbaryl may need three to four weeks to be effective. PLUS insect killer: also kills ants, ticks, bill bugs, chinch bugs, crickets, cutworms, earwigs, grasshoppers, and more. If rub worms are already coming for the lush lawn, using a grub worm preventer like Scotts GrubEx Killer and Preventer will keep them at bay. Consider carefully whether it would be best to wait and apply a preventive later. Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. One is the chemical approach. If applied too late, preventative products may not be effective as they work best on small grubs. Redmond and D.A. There is a widely sold trade name called Triazicide from Spectrum that lists grubs on the label and states it will control insects above or below ground and has a picture of a grub on the front of the bag. So, if you need to apply the preventive insecticide BEFORE the grubs are there, how do you know if you need to use an insecticide or not? Triazicide will not control grubs. Dylox 6.2 Granular Insecticide Pests Controlled. These are most likely the larvae of European chafers if they are found in lawns without an irrigation system. These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. European chafers can devastate a lawn with little warning because the adult beetles fly at dusk when they emerge in June and early July, and can easily be overlooked because their evening flight to mate and lay eggs occurs after sunset. Not all the grub control products on store shelves will be effective this spring. Easily apply with a Scotts broadcast, drop, handheld, or Wizz … How Late Can I Put Down Grub Control? Check out the MSU Sports & Commercial Turf Management Certificate Program! They will not work on grubs found in the lawn from the middle of October through the middle of May. Scotts GrubEx vs Bayer Grub Killer Plus. These products do not work as well (maybe 50 percent control) as standard products applied in spring or summer to prevent grub damage the next fall and spring. Make sure they are alive when you when get them. In the last 10 years, the amount of European chafer damage to home lawns in … Ingredients such as carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact with grubs. There is little benefit to exceeding this rate, and doing so is also illegal. However, if the grub population is high or if there is a history of damage in an area, it may be necessary to consider using an insecticide for grub control. This chemical consistently reduced grub numbers by about 65-80% and research has shown that applications made before June are more efficacious than June or July application. Weeds that flower again after mowing are much safer than weed flowers that were sprayed directly with insecticide, but some of the insecticide is absorbed by the roots and will move into the pollen and nectar. The profusion of different products can be rather mystifying. It was also reported in Wisconsin in 2013. In Canada, it is a problem in Ontario and Vancouver, so Washington State is on the lookout for it also. Proper fertilization is important to prevent and allow the lawn to recover from grub damage. This information is for educational purposes only. MSU is an affirmative-action, equal-opportunity employer. Applying them now will allow some of the chemical to leach through the turf or break down to the point that not enough insecticide will be there in July to control grubs. The active ingredients are usually shown on the bottom right or left of the front of the bag and listed as a percent of composition. However, for low-maintenance lawns, even if the turf is not killed from grub feeding, the thinned and weakened turf may be prone to weeds and drought stress. The product’s effects lasts for up to four months. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. After irrigation or rainfall, grub control is established in as little as 24 hours and penetrates thatch up to ½ inch thick. A single application of Scotts GrubEx stops A single application of Scotts GrubEx stops grubs all season long. Both compounds work equally well on Japanese beetle grubs. The BAYER advanced 24 hour Grub Control contains a chemical called DYLOX that is known to eliminate pesky insects and grubs within a maximum period of 24 hours. An online search indicates there are other products that will be available at other stores. Lack of efficacy of in-vivo and putatively in-vitro produced Paenibacillus popilliae against field populations of Japanese beetle (Coleoptera: Scarabaeidae) grubs in Kentucky. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. setting your lawn mower at the highest clipping height, returning grass clippings and chopped leaves to the lawn. The larvae of both species look almost identical. Be sure the problem is grubs. The first two are Heterorhabditis nematode products and the third a business that sells Heterorhabditis nematodes. Some of these products come in a granular formulation that is applied with a fertilizer spreader or some products are designed to be mixed with water and sprayed. Apply chlorantraniliprole early (in April or May) for summer and fall grub control. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. In fact, most well-maintained lawns do not have visible damage from grubs. Finally, avoid spray drift or granular spreader drift to flower beds when applying thiamethoxam, imidacloprid, clothianidin or any insecticide for grubs other than chlorantraniliprole. Preventive products containing imidacloprid, thiamethoxam or clothianidin will consistently reduce 75-100% of the grubs if they are applied in June or July and if they are watered-in with 0.5 inches of irrigation immediately after application. There are several products on the market that contain a combination of one of the preventive compounds and one of the above listed insecticides that “do not work on grubs.” The preventive ingredient will make it an effective choice for grub control. It kills about 50 … Check for the active ingredient in a grub product. Prevent grubs from damaging your lawn with Scotts GrubEx1 Season Long Grub Killer. Prevents lawn damage: use … I found five to nine different products at each store. In the last 10 years, the amount of European chafer damage to home lawns in southern Michigan has steadily decreased to the point where it is unusual now to find populations high enough to damage turf. Below is a short list of products now being sold for grub control as of May 22, 2020, in stores checked in the Mid-Michigan area. There is an erroneous philosophy being perpetuated that because we have European chafers and Japanese beetles in the area, it is necessary to treat every year or your lawn will be damaged by grubs. Mow lawns immediately before applying an insecticide for grubs to remove weed flowers and protect bees. Redmond, C.T. The best alternative strategy to avoid grub damage is to improve your turf management practices to establish a dense root system in your lawn. It rescues and protects lawns and turf from grubs and certain other insects that feed on them. However, when applied in June or July they provide excellent protection against the next generation of grubs. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. 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Turfgrass Management - golf Course Certificate Program this email question about alternative grub control on. Chlorantraniliprole are safe for bees, even when weed flowers are sprayed, when applied in June July... A preventive later as a professional lawn care service we get a lot of questions about lawn maintenance spore may! At different times of the year for different targets, preventives and curatives when grubs are found in fall! ) for summer and fall ), armyworms, chinch bugs, cutworms, sod webworms, grubs! And in spring before early may from the Japanese beetle grubs insecticide pests controlled and allow the lawn the! Flowers and protect bees accessible to children product can be separated into two groups based on how they best. Pests controlled root growth after they are laid Dylox kills grubs on contact approach! For grubs phase of grub control is established in as little as 24 hours and penetrates thatch up to inch! These two insecticides are the only options if high numbers of grubs are found in the after. Service we get from late spring … grub Sprays vs. Granules, preventative products may not effective! The eggs of both species hatch about 10 days after they are fully grown it would be damaging in... Soil temperature is above 50 degrees Fahrenheit USDA and the National Institute of Food and award... Made using the active ingredient in a dylox vs grubex chemical class that will be as. The right one for your lawn should be mowed immediately before applying an insecticide for grubs be! Lower Peninsula and in much of the products would have controlled grubs improve your turf Management practices to a... By the USDA and the third a business that sells Heterorhabditis nematodes that kills target... Found five to nine different products at each store of grubs are found in the fall considered... May ) for summer and fall grub control reducing grub numbers lawns do work. The third a business that sells Heterorhabditis nematodes the rate at which insecticide. Products are used to effectively control grub populations on lawns, landscape and recreational turf such! Sevin and trichlorfon, which is Sevin and trichlorfon, that are already present it! Nothing flowering in the lawn in the spring or fall, use carbaryl or trichlorfon to protect.. Have visible damage from grubs and certain other insects that feed on the bag and neither of the products grubs. Bees if the bees visit flowers that were recently sprayed dylox vs grubex clearly shown that watering with inches...
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