Gypsy moth infestation

Asked June 12, 2020, 8:11 AM EDT

We are dealing with what I believe to be a gypsy moth infestation in Deckerville, MI area home. Not sure who to turn to......pest control? The black caterpillars with webs seem to be everywhere.....on all landscaping/flowers and covering sides of house. Thanks for any information you can give me of where to get help!

St. Clair County Michigan

1 Response

MSU has a webpage dedicated to resources on gypsy moth.

If there are still young caterpillars on the leaves, you can spray Bt (Bacillus thuringiensis var. kurstaki) onto the leaves. This chemical only kills gypsy moth and a few species of caterpillars in trees. Some municipalities have arrangements to spray areas with high populations of gypsy moth. I would recommend contacting the County extension office ( to see if they know if St. Clair County funds these efforts.