Identification of insects and diseases is available through local Extension offices and the Plant and Pest Diagnostic Clinic at The Ohio State University. To prescribe a control, you must understand the pest organism, its life cycle and the type of damage it causes. Consider all control options. Select the most effective and appropriate option or combination of options. Apply controls at the right time.
Insects are more vulnerable at certain stages of their life cycle.
Eggs may be controlled with oil sprays. Larval stages are particularly vulnerable. It is critical to control insects before they reproduce and increase their population. When an insect is protected by the pupal case, control is nearly impossible. Reapplication may be necessary for many pests to kill the young as they emerge from eggs.