This clear, non-sticky spray will stop pets and horses from chewing on paws, furniture, hot spots, wounds, drapes, leg wraps, manes and tails. It is non-staining, so it can be used on any washable surface, indoors and outdoors. Bitter YUCK! is water-based, not alcohol-based, so it will not cause stinging and can be applied to wounds or bandages. Active ingredient: Rosemary (0.5%).