This 44-pound tub of Neporex 2 SG Larvicide is an insect growth regulator (IGR) designed to control fly larvae in cattle, hog, and poultry operations. It is a highly selective solution that is applied to the breeding sites of flies. The active ingredient, cyromazine, is from the triazine group, which as a family of pesticides is one of the least toxic to wildlife.

Neporex disrupts the molting process, which is essential for the fly life cycle. It interferes with the chitin metabolism of fly larvae at all 3-stages, stopping these larvae from developing and preventing the proliferation of the fly population. Additionally, Neporex has no negative impact on beneficial insects.