SimpliFly contains LarvaStop, an exclusive active ingredient that is scientifically proven to break the fly life cycle by preventing immature flies from developing into biting, breeding adults.

Stable flies and house flies lay eggs in manure where the larvae (maggots) feed and develop into adults. 90% of the fly population is in the pre-adult stages; by killing fly larvae, you stop flies at the source, before they become biting, breeding adults. Before they irritate you and your horse!