Each Tomcat Rat & Mouse Killer bait station effectively kills up to 10 rats (based on no-choice laboratory testing) with its pre-filled 4-oz. bait block while providing Tomcat s highest level of station security. Effectively kills rats and mice. Resistant to tampering by children and dogs the disposable station gives rats and mice easy access to bait and keeps fingers and dog paws out. The bait station is also weather-resistant making it the ideal station for indoor and outdoor use. Also includes a see-through window for easy monitoring of bait so you always know when you need to replace your station. Bait stations are easy to use allowing placement in small places like entry and garage doors below windows near utilities and any other areas where mice tend to hide.