Farnam Endure Sweat-Resistant Fly Spray for Horses Deadbolt and Door Knob Combo Tryptophan (min

Tryptophan (min

Supports a healthy immune system — A high level of Vitamin E helps birds maintain a robust immune system

Life Stage

Each tooth is built with more steel behind the cutting edge for added strength

Farnam Endure Sweat-Resistant Fly Spray for Horses Deadbolt and Door Knob Combo Tryptophan (minWon't sweat off! You can't seal your horse in a fly free zone, so EndureSweat Resistant Fly Spray for Horses is the next best option. Its unique formula keeps on working even in wet conditions such as sweat and rain. Protect your horse from biting and nuisance flies, gnats and deer ticks that may transmit Lyme disease.