Shake well and spray in the opposite direction to which the fur lies. Massage into the coat. No rinsing is required. For external use only. Avoid contact with eyes. Irritation may occur after using any product for pets. If it persists consult your veterinarian. Keep out of the reach of children and pets. This should never substitute prescribed medication. It works best as part of a holistic approach to either dermal treatment or flea and tick control. Compatible with pharmaceutical products. NanoSanitas Products are not intended as pharmaceutical substitutes, they work best as part of a holistic approach to either wound healing or flea & tick control.