Asked June 28, 2018, 4:37 PM EDT

How often should I spray. Will it hurt trees to overspray? I am seeing tiny little bags. Is this the time to spray.

Worcester County Maryland bt bagworms trees pest insects and mites

1 Response

Now is the perfect time to use a Bt spray - which is a non-toxic botanical that only works when caterpillars are small.
Here is our page on Bagworms with more information: