C-M PowderGard is an OMRI-listed organic insecticide. The formulation allows CMPG to quickly control insects without the need of chemicals, toxins, or poisons. CMPG is a fine dry powder and can be mixed into a liquid solution. Both allow for easy application to homes, gardens, lawns, and agricultural settings. How does CMPG work? Mint clogs the insect’s spiracles (respiratory structures) causing the insect to suffocate and over stimulate the nervous system. Limestone helps clog the spiracles as well and abrades the exoskeleton helping the mint reach the nervous system.