Horseware Amigo Bug Buster Vamoose Fly Rug in Silver/Navy. The Amigo Bug Buster is treated with the Vamoose insect control technology for superior fly protection. Vamoose Insect Control Technology is a synthetically engineered form of Permethrin which is a natural yet powerful fly repellent typically used against mosquitos. The Vamoose is bound to the fabric of the rug and is effective for up to 20 washes. The Bug Buster features an extra deep cut which allows the rug to be wrapped around the horse's belly while the super sized tail flap offers added protection. Read more… The rug also features classic front closure, removable neck cover with mane liner included, patented leg arches and fastens with 3 straight surcingles. The Bug Buster is made with knitted polyester and is ultra breathable. Compatible with the Horseware Waterproof Fly Rug Liner. Fly mask sold separately