Insect ShieldŽ Features: Built-in Insect ShieldŽ repellency provides effective, invisible and odourless protection against mosquitoes, ticks, ants, flies, chiggers, and midges (no-see-ums), making these nets a must for anyone seeking protection from biting insects. Apparel treated with Insect Shield technology provides effective protection through seventy washings and, on gear, the repellent benefit lasts through 25 launderings or through six months of constant exposure to weathering, including both sun and rain. The active ingredient, permethrin, is a commercially produced version of a natural insect repellent found in certain chrysanthemum plants, and has been used successfully in North America for over thirty years. Insect ShieldŽ technology can be an important aid in the battle against insect-borne diseases and improve the health of people using it worldwide. In partnership with a number of agencies and international relief organizations, Insect ShieldŽ technology is now being used for apparel and other items that people use daily to aid in protection against insects.