What are they?
Adults are sometimes called “sod moths” because they fly up when disturbed from the grass. They lay eggs as they fly, which become the ravenous caterpillars. They overwinter as caterpillars in the soil, only to emerge in the spring to become adults and breed.
Which stage causes damage?
Sod webworms cause damage mostly in the caterpillar form. They stay in this larval form for most of the year, eating everything they can reach.
How can you get rid of them?
The best way to rid your lawn of these pests is to irrigate and fertilize regularly. Grass that is stressed is most susceptible to pest damage. Not all lawn insects are destructive, but the insects described are both destructive and highly prevalent. For a healthy lawn, it is best to keep these lawn insects under control!