Bluegrass billbugs Scout for problems before you treat.
Lawns are home to many, many insects.
Very few of them are harmful, and many are even beneficial. Healthy grass plants can tolerate some feeding by the harmful insects. The open spaces the pests create in turf can be ugly, vulnerable to erosion, and invaded by weeds. Most pesticide applications made to home lawns aimed at killing insect pests are either unneeded or ineffective. If you do treat, you need to make sure that you apply the pesticide correctly and at the right time.