Just in case anyone else is having a rat problem, and if you haven't, you probably will. This stuff worked like a dream and I got it on sale at TSC..really cheap, like $2.99 right now for a 1 pound bag and it's killed two 1 lb rats so far! There's no risk of secondary poisoning to chickens or other animals, so it's also safe AND it's for warfarin-resistant rats, too.