Description On farm fly control, Larvenol is an innovative insect growth regulator designed with progressive release to effectively control maggots and larvae. The unique active S-Methoprene inhibits larvae from maturing into adult flies. Apply as a granule directly to the muck or areas where flies and maggots are breeding. For use in poultry and livestock housing, including calf/animal rearing under straw bedding. Effective for up to 8 weeks depending on use and the level of infestation. 0.4% S-Methoprene
