The gypsy moth invasion of 2017 has begun. I kill gypsy moth caterpillars with an organic spray. It is easily available in stores as Bt For Caterpillars (Thuricide). You must reapply it every 12 weeks.

Be sure to spray under and over the leaves to kill any eggs or baby caterpillars before they get to be large. The bacteria will eat away at them and kill them.

For gypsy moths wrapping trees is not effective as they don't go up and down the trees often.

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