The caterpillars will web together foliage which they then feed, defecate, and pupate in. The nests can be easily located by visual inspection; they are found primarily on chokecherry, but can also be found on other hardwoods and shrubs. To monitor an orchard for presence of caterpillars, one should look for the development of untidy nests of webbing, twigs, and leaves. The best means for removal is to prune and destroy webbed nests. The caterpillars can also be chemically removed through use of pesticides. Pesticides like the bacteria "Bacillus thuringiensis" can be sprayed to control young larvae. Larger populations of older larvae can be controlled with a residual insecticide, but damage is rarely sufficient to warrant treatment that may endanger the rest of the local environment. Biorational pesticides like insecticidal soap, pyrethins, spinosad, and tenbufenozide can also be used.