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Fame Shock News

how to get rid of grub worms

Author

Rachel Fowler

Updated on June 11, 2026

There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. They are short-lived compounds that kill all life stages of grubs. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May.

What is the best time to treat for grubs?

Treating in late summer or early fall is ideal, as that is when the smaller, young grubs are most susceptible to nematodes. There is also usually a short window for application in early spring before the grubs get too big and pupate, but that is a narrower window and can be difficult to time properly.

What is a natural way to get rid of grubs?

Natural Grub Treatment

These include milky spore, neem oil, and nematodes — available at most garden centers. Milky spore is a disease that can effectively treat lawn grubs and is environmentally safe. Spores are applied to affected lawn areas, infecting lawn grubs as they feed.

Is it too late to treat for grubs?

By the time damage is apparent it is much too late for preventive white grub products such as Merit and Grub-X. These must be applied before mid-August. Insecticides must be watered in to be effective.

What causes grubs in your lawn?

The grubs get their start when the adult beetles lay eggs in your turf, usually in spring. After the eggs hatch, the grubs evolve in three stages, with grub damage greatest in late summer, when you will see areas of your lawn thinning and yellowing. Later, irregular brown patches appear in your turf.

What can I put on my lawn to get rid of grubs?

You’ll need to water your lawn before and after you apply a curative pesticide to make sure it gets soaked up by the soil. The most common curatives include the ingredients carbaryl and trichlorfon. Different curatives may kill grubs at different stages, so the time of year you apply them may differ.

How do I prevent grubs in my lawn?

The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. In spring or early summer, apply a preventative grub control product, such as Scotts® GrubEx®1 to your lawn, following label directions. This is especially important if you’ve had problems with grubs in the past.

What does grub worm infestation look like?

Symptoms of an infestation include general thinning or yellowing of turf, which is very similar to other pest infestations like chinch bugs, for example, drought or nematodes. One way to determine a grub worm infestation is to step on the turf in the spring and see if it feels spongey or bouncy.

Will my lawn recover from grubs?

If you find your lawn afflicted with the curse of the lawn grubs don’t despair. Treating and eradicating these pests is relatively easy. You will need to be particularly vigilant as the weather warms up, usually September to March, and after heavy rain.

What animals eat grub worms?

Grub damage to lawn is also caused by birds, skunks, armadillos, raccoons or moles are tearing up your lawn —they eat Grubs and are trying to uncover them. These animals also dig and eat Earthworms, so confirm Grubs are present before pursuing any treatment. Your turf has become spongy.

How do I know if grub worms are killing my lawn?

Peel up a one square-foot section of grass and soil from that cut. If there is significant grub damage, the grass should peel up quite easily. Sift around in the soil, simply counting how many grubs you find. If you count 10 or more grubs per square foot, you have a serious infestation.

What animal eats grubs at night?

Raccoons and skunks are two common grub-eating nocturnal culprits for digging in yards.

How quickly does GrubEx work?

GrubEx begins working 60 to 90 days after being applied to the soil. Unlike Merit, which works almost immediately, it’s important to distribute GrubEx from mid-April to early June. Doing so after this reduces the chance GrubEx controls grubs in your lawn. Disclaimer: GrubEx will not kill every grub.