ORGANIC LOOPER CONTROL USEFUL ON ALL COLE CROPS! A completely organic moth and butterfly larvae control. A liquid preparation of Bacillus thuringiensis (Bt), a naturally occurring microbial disease organism fatal to larval stages of moths and butterflies. Harmless to people, birds, fish, wildlife, bees and other beneficial insects. Leaves no harmful residue. Can be used up to the day of harvest. Easy to use.