Simms Insect Repellent by Dermatone is derived from a unique blend of all-natural herbs and plant extracts and is 100% Deet-free so it won't damage your equipment. Sweatproof and comfortable wearing, Simms Insect Repellent is effective against mosquitoes, black flies, greenheads, deer flies, horse flies, biting midges, chiggers, gnats, fleas and more. (2oz spray bottle)