This is a defensive application that creates a barrier around the foundation and conducive access areas of your home that prevents insects from creeping, crawling or wriggling their way inside. It is applied as a fast-drying mist spray around the exterior foundation of your property, including window wells, vents, ports, crevices and under patios. One application should last at least 30 days and we offer three different times during the year for applications to respond to various insect varieties throught the year.