OnyxPro insecticide was specifically formulated for nursery growers and Christmas tree growers to prevent damage from devastating bark beetles, wood borers and clearwing borers. Protect your investment with a preventative application of OnyxPro insecticide. For best results, apply OnyxPro one or two months prior to expected adult beetle flight (check with your county or local state extension specialist to find out the optimal timing for the target pest). Then rest easy knowing youve protected your plant investmentsand the nations forestsfrom borer and beetle damage.