Purina® EquiTub™ with ClariFly® is an easy-to-feed, self-fed horse supplement for consistent nutrition and seasonal fly control. Contains ClariFly® Larvicide, a feed additive that passes through the horse and is expelled in the manure, where it helps control house and stable fly populations by interrupting their life cycle. Formulated with Outlast® gastric support supplement to support optimal gastric PH. Available in 55 and 125 lb. tubs. Follow this link for more information.