How to get rid of Grubs
Do you have dead spots in your lawn? Do animals dig up your lawn searching for food? If you answered yes to these questions your lawn may have an excessive amount of grubs. Grubs are the larvae of beetles. Two types of grubs that cause the most damage are Japanese beetle grubs and European Chafer grubs.
European Chafer Grubs
European Chafers give little warning before they devastate your lawn. It is possible that you will not even notice these beetles because they only fly at night. European chafers fly to mate and lay eggs in your lawn during the night around June. European Chafers like lawns that are dry and not irrigated, but will still lay their eggs in irrigated turf.
Japanese Beetle Grubs
Japanese Beetles prefer different lawn conditions than European Chafers. Japanese beetles are more likely to lay their eggs in irrigated turf than the European Chafer. Japanese Beetles also do not stop laying their eggs after June and July has passed. Japanese Beetles will continue to lay their eggs into the month of August, which means it is important to have a long-lasting grub preventative application.
The eggs of both Japanese Beetles and European Chafers will hatch about 10 days after the eggs are laid.
The best way to get rid of grubs is with a preventative grub control application.
Be careful when you select which type of grub control to put on your lawn. There are some products that advertise that they control grubs, but actually do not help control grubs at all. The product that has worked the best for me, is Scotts Grub-Ex which contains .08% chlorantraniliprole. Grub-Ex is extremely effective when it is put down in May or early June. You can check the price here.
It is extremely important that you water in your grub application within 24 hours of applying preventative grub control. Research has shown that watering in the grub control the same day is extremely important to achieve control of the grubs. Your whole lawn should receive at least half an inch of water to effectively move the grub control granules into the soil. If you are not sure how much a half an inch of water is, put a measuring cup in your lawn and run your sprinklers until the cup has half an inch of water in it.
It is important to calibrate your spreader to put the proper amount of grub control preventative on your lawn. Research has shown that putting more grub control preventative than what the label states will not be kill more grubs. It is illegal to apply insecticide over the label rate, and will also be a waste of money. If you are unsure how to calibrate your spreader, read our spreader calibration guide.