Optigard® Flex Liquid insecticide goes beyond exterior walls. Because pests go beyond exterior walls. The product’s unique, non- repellent chemistry, low use rates, and versatile application methods allow efficient, effective control of pests both indoors and out. Since Optigard Flex is labeled for both indoor and outdoor use, it cuts down on the number of products you need to control an infestation. It’s even versatile enough to be applied as a liquid perimeter spray, spot spray, foam treatment, or crack-and-crevice application—setting a new standard for general pest control.