DAC Citronella Spray is a naturally aromatic, water-based spray that has a pleasant herbal fragrance, which contains Citronella,  Rosemary, and Cedar Oils that provide protection for up to 2 days without irritating your horse's skin. dac® Citronella SPRAY protects up to two days. Safe for open or pre-existing wounds,  and is pesticide-free and non-toxic.