OFF! Bug Control Backyard Pre-Treat is a concentrate that, when attached to a hose and sprayed around a backyard perimeter, will protect an area up to 16,000 square feet from over 110 insects for up to 8 weeks on hard, non-porous surfaces. Protects trees, shrubs, ornamentals, structures, and a number of vegetables from insect damage. Active ingredient: Lambda-Cyhalothrin.