No, there are no control measures involving spraying the trunk or the ground. The adult moths lay their eggs in the fall, which overwinter to hatch out in the spring. That is the time to spray the canopy of the trees. Later on in the season, the caterpillars drop or climb to the ground and pupate in the soil. The new generation of adult moths will emerge from the soil in the fall in order to mate and lay eggs.

Bt applications can be quite effective, as long as the product is applied when the caterpillars are very young.