One is the chemical approach. 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. Dylox 6.2 works by both contact and ingestion. Now it has spread throughout Ohio, Michigan (all of the Lower and half of the Upper Peninsula), northern Indiana and into eastern Illinois. 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. 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. 1995. Prevent grubs from damaging your lawn with Scotts GrubEx1 Season Long Grub Killer. 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. They will not work on grubs found in the lawn from the middle of October through the middle of May. Check the bag or bottle to determine what active ingredient the product contains. Entomol. Time for me to put down my grub control but in the process I found out some key important information. 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. Be sure the problem is grubs. Granular vs Liquid Grub Killer; Grub killer vs grub preventer; ... GrubEx is made using the active ingredient called chlorantraniliprole. 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. The first two are Heterorhabditis nematode products and the third a business that sells Heterorhabditis nematodes. Neither of the products listed grubs on the label printed on the bag and neither of the products would have controlled grubs. Use Dylox 6.2 Granular Insecticide … Research tests over the last 25 years have clearly shown that watering immediately after application helps to obtain good results. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. 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. The critical issue with any grub control product is the active ingredient. 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. To kill grubs in the spring or fall, use carbaryl or trichlorfon. A garden center owner asks about alternatives to standard grub control insecticides. Triazicide will not control grubs. These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. Easily apply with a Scotts broadcast, drop, handheld, or Wizz … Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. Here’s how to choose and use the right one for your lawn. Check out the MSU Turfgrass Management - Golf Course Certificate Program! Dylox … Scotts GrubEx kills 25% more grub types versus original Grubex. 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. The Bayer 24 Hour Grub Killer contains DYLOX… Here’s a review of products and best practices. 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 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. 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. Check the active ingredients. One trichlorfon product has “24 Hour Grub Control” in its name and would seem to indicate that it will kill grubs in 24 hours. 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. J. Econ. Dylox (Active ingredient: Trichlorfon) Widely used by professionals, Dylox kills grubs after they are in their third instar. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. 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. 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. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. It kills 25% more grub types vs. original GrubEx. The standard, and highly effective, grub control insecticides are products that contain imidacloprid, clothianidin or thiomethoxam. This article was published by Michigan State University Extension. Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. 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. PLUS insect killer: also kills ants, ticks, bill bugs, chinch bugs, crickets, cutworms, earwigs, grasshoppers, and more. Several species of beetle larvae are categorized as white grubs. 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. vs. There was a product available in years past from Spectrum that contained imidacloprid, but I did not see any in my visits the last two years (2016 and 2017). Alternatives: Synthetic Chemical Inhibitors - Preventative Curative Control •Organophosphates - Dylox® (Bayer has voluntarily canceled its production of most products containing the chemical), Diazinon® (off residential market) and ... (Acelepryn® & GrubEx … Michael WillsonWillson's Garden CenterPetoskey, MI 49770. 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. For more detailed information, on this go to the Michigan State University Turf website and see the grub control bulletin posted there. The outbreak phase where turf damage is common may last five to 10 years. Do not apply any curative compounds in the spring after May 15 as grubs stop feeding in late May as they prepare to pupate. MSU is an affirmative-action, equal-opportunity employer. Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. There is little benefit to exceeding this rate, and doing so is also illegal. The two most common are carbaryl, which is Sevin and trichlorfon, which is Dylox. Japanese beetles like to lay their eggs on irrigated turf like golf courses, athletic fields and highly maintained lawns. 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. Potter. 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