'Shillelagh 410 Microbicide' is a microbicide/microbistat. Its Federal EPA registration number is: 36531-5. It was originally approved by EPA on 23 Mar 1981. Its registration got cancelled on 10 Oct 1989. It has a 'Danger' signal word. It has the following active ingredients: Trichloro-s-triazinetrione. It's approved for 1 sites including cooling tower water. It is also approved for 1 pests and pest groups including but not limited to slime-forming bacteria.