Crop Control was not designed to kill caterpillars. We recommend using BT to get caterpillars under control if you have an infestation. To prevent caterpillars, we recommend applying our product from the start. Moths come early and lay eggs on the plant. Then, as the plants are flowering, out come the caterpillars. If you were to use Crop Control as preventative maintenance, you would repel the moths, therefore reducing the colonies of caterpillars.
