In areas of intensive potato production where insecticides have been heavily used, beetles are resistant to nearly all insecticides. Five major classes of insecticides are listed below. Be sure to follow directions on the label of any product. This broad-spectrum insecticide is derived from dried chrysanthemum flowers. It is most effective at cool temperatures and less effective as temperature increases.
Rotenone is a broad-spectrum insecticide that is derived from the roots of a tropical plant.
It is sold alone or in a mixture with pyrethrins or methoxychlor. Disclaimer - This publication contains pesticide recommendations that are subject to change at any time. These recommendations are provided only as a guide. It is always the pesticide applicator's responsibility, by law, to read and follow all current label directions for the specific pesticide being used. Due to constantly changing labels and product registration, some of the recommendations given in this writing may no longer be legal by the time you read them.