Carr & Day & Martin Extra Strength Insect Repellent Gel has been developed as a solution to reduce reliance on a spray and still keep flies away from your horse. Based on the same formula as Carr & Day & Martin Extra Strength Insect Repellent this gel allows you to apply by hand or sponge for greater coverage. The concentrated application of gel contains 10% DEET for optimal, long-lasting protection for a more accurate and alternative application ideal for faces and, ‘spray nervous’ horses.