Safer's End-All Concentrate Insecticide 500ml is a powerful and versatile bug killer designed to eradicate a variety of household pests. This concentrated solution is easy to use and can be diluted with water for spraying or as a surface treatment. The active ingredient, lambda-cyhalothrin, is a synthetic pyrethroid that has long-term residual activity and is effective against a wide range of indoor and outdoor bugs, including ants, mosquitoes, flies, bedbugs, spiders, cockroaches and more. Safer's End-All Concentrate Insecticide 500ml is great for protecting your home and family from pests, and will help you keep your house bug-free.