The Tomcat Rat & Mouse Killer Disposable Bait Station - Advanced Formula controls rats and mice with an advanced formulation bait block that is more attractive to house mice (compared to the Tomcat Rat & Mouse Killer Child & Dog Resistant, Disposable Station [EPA Reg. No. 90780-9]). This pre-filled disposable bait station can be used horizontally or vertically inside or outdoors. It is resistant to weather and to tampering by children and dogs. Each 4-oz. block of bait can kill up to 10 rats (based on no-choice laboratory testing). Bait stations with mouse and rat poison should be placed in areas where rats and mice will find them such as beside burrows, along walls, behind kitchen appliances, in corners, along the exterior of the home, and in basements, attics, and garages. If more than one station is being used, place them at 15- to 30-foot intervals. Each Tomcat Rat & Mouse Killer Disposable Bait Station has a clear cover to make it easy to monitor when bait has been taken.