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Tri-Tec 14 Fly Repellent is a water-based formula that protects your horse from six types of biting and annoying flies, as well as gnats, mosquitoes, lice and ticks (including deer ticks that can transmit Lyme disease) . Tri-Tec 14 offers fast, long-lasting protection, continues to work for up to 14 days. Practical spray nebulizer, even quieter so as not to make the horse nervous during application. Contains multiple active ingredients including: Cypermethrin, Pyrethrins, Piperonyl Butoxide, Technical Glycol and Butoxypolypropylene. Available in 15 oz (425 g) continuous spray format. Spray soon all'uso.