🐴 Keep your stable fly-free and your horse happy! Contains no organophosphates; only affects manure, not your horse. Formulated with LARVASTOP and diflubenzuron for maximum fly prevention. Prevents house and stable flies from developing in manure. Available in multiple sizes to suit your needs, from 60 days to 800 days. Highly palatable pellets made with alfalfa, simply mix with feed. No organophosphates 3.75 lb bucket 60-day fly control Farnam SimpliFly Feed Through Fly Control is a highly effective solution for managing fly populations in your horse's environment. This 3.75-pound bucket provides a 60-day supply, utilizing palatable alfalfa pellets that are easy to mix with feed. With no harmful organophosphates and active ingredients designed to disrupt the fly lifecycle, this product ensures a healthier, more comfortable space for your horse.