Pyranha Equine Spray & Wipe water-based formula provides quick knockdown of flying insects, and won't attract dust or grime. Effective for up to 30 days. Avid riders will want to reapply every 10-14 days to maintain maximum control. Kills and repels repels stable flies, horse flies, deer flies, house flies, face flies, horn flies, gnats, mosquitoes, bot flies, ticks, fleas and lice. Pyranha Equine Spray & Wipe contains 0.25% pyrethrins, 2.5% piperonyl butoxide, and 0.50% permethrin. Citronella scent.