Pestrol Pro Insect Shield® Repellent Apparel and Insect Shield® Repellent Gear are revolutionary products designed to provide long-lasting, effective and convenient personal insect protection. The durable protection provided by Insect Shield apparel and gear is the result of years of research and testing. In July 2003, Insect Shield Repellent Apparel was registered by the United States Environmental Protection Agency. Insect Shield apparel and gear products combine the patent-pending Insect Shield process with a proprietary formulation of the insect repellent permethrin—resulting in effective, odourless insect protection that lasts the expected lifetime of the product. It is the most effective insect repellent clothing on the market.