The extra strong insect repellent is our most powerful formula. This effective formula offers maximum protection against gnats and biting insects. It contains the proven, sought-after active ingredient DEET (diethyl-meta-toluamide) – a chemical developed by the armed forces to repel insects in the jungle, at an optimal level of 20% for powerful and 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 a day for maximum protection. Always read the label and product information before use. 500 ml.