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Mechanical controls such as trapping, destroying egg masses and banding trees with burlap. Larvae will congregate under burlap bands, where they may be collected and destroyed.
• Insecticide use is the only way to effectively suppress heavy populations. Chemical insecticides are the cheapest and most consistent controls, but many landowners object to their use.
A viral spray, NPV, is a natural disease of the gypsy moth; a cheap, effective formulation has not yet been developed.
The bacterial spray Bt is a safe, moderately effective alternative to chemicals. Recent improvements to Bt formulations have increased its effectiveness and lowered its cost substantially.
— Lyt Wood
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