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Extra Strength Insect Repellent is our most powerful formula. This effective formula offers maximum protection from midges and biting insects. Contains the proven, researched active ingredient DEET (diethyl-m-toluamide) – an effective chemical developed by the military to repel insects in the jungle), at an optimal level of 20% for powerful, long-lasting protection. Shake well and spray generously on the horse or apply with a cloth, taking care to avoid eyes and mucous membranes. If using for the first time, test on a small area of skin to establish suitability. Provides instant protection, apply twice daily for maximum protection. Always read the label and product information before use. 500ml.