Combat Roach Killing Bait Strips formula attracts roaches with the food and water they need. Roach killing bait strips kill roaches both large and small in their place of origin. With its new, unobtrusive design, easily apply and no mess. Combat Roach Killing Bait Strips can be placed throughout your home so more roaches can find and eat the bait - resulting in a quicker and more thorough kill.