Encapsulation: an effective environmentally friendly technology for delivery of insecticides and repellents.

The evolution of encapsulation for the delivery of insecticides has significantly influenced a number of key formulation parameters concerning safety and the environment. The first parameter is the release of the active ingredient at a fully controlled concentration, thus increasing the life of the formulation after treatment. The second is the reduction of the concentration of the active substances used for a treatment. This prevents the risk of exposure of applicators and homeowners alike. The advantage of encapsulation is slowly being recognized worldwide by the pest control industry, and the number of patents granted for microencapsulated insecticide products has become increasingly important as proof of the orderly progress of the technology.