About Tomcat With over 30 years of research backing their products, Tomcat develops and manufactures pest-control products ranging from baits, mechanical traps and glue traps. With the belief that no home should tolerate the existence of unwanted pests, Tomcat offers a wide variety of products designed to target any type of pest in any living environment. Please note this product does not ship to Pennsylvania. Kills rats and mice. Great for use in homes and farms. Contains active diphacinone. Ready-to-use. Comes complete in a pail.