Eagles Nest Outfitters DoubleNest Hammock with Insect Shield Treatment - Khaki/Olive BEAT THE BUG-BITES WHATEVER THE WEATHER. Another battle won in the war against bug-bites! The Insect Shield DoubleNest is treated with a Permethrin insect repellent that safely and effectively wards off insects for up to 6 months of exposure to the elements. They may have pokers, stingers, biters and claws, 