'Welgicide' is a disinfectant and sanitizer. Its Federal EPA registration number is: 9429-7. It was originally approved by EPA on 22 Mar 1969. Its registration got cancelled on 01 Jul 1987. It has a 'Danger' signal word. It has the following active ingredients: Alkyl* dimethyl benzyl ammonium chloride *(100% C14) and Sodium carbonate. It's approved for 1 sites including irrigation well water. It is also approved for 1 pests and pest groups including but not limited to slime-forming bacteria.