FLY SPRAY, DURAGUARD - 32 OZ (W.F. Young) Duraguard is the first sweat proof, water proof, and worry proof spray from Absorbine. Proven to repel or kill every species of insect known to affect horses, even under the wettest conditions. Kills on contact. Bonds right to the hair shaft so that water rolls right off, leaving the protection where it belongs. Stays active for up to 14 days.

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