Equisect Fly Repellent from Farnam(R) Tested and proven natural fly spray that really works! . Effective against 5 types of flies, mosquitoes, lice and gnats on horses, and fleas and ticks on dogs and cats . Contains the first pyrethrum listed by the Organic Materials Review Institute - PyGanic(R) . Also contains botanical and essential oils of citronella, clove stem, thyme and corn mint . Official Fly Control Product of the USEF and the AQHA . Available in 32 ounce spray For Label Information and MSDS Sheet, please click on Manufacturer"s Information to the right.