'Rat-nots' is a poison, single dose. Its Federal EPA registration number is: 358-13. It was originally approved by EPA on 26 Feb 1948. Its registration got cancelled on 22 Jan 1991. It doesn't have any signal word. It has the following active ingredients: Red squill. It's approved for 2 sites including agricultural premises and domestic dwellings. It is also approved for 2 pests and pest groups including but not limited to norway rat and roof rat.