Safari Flea Comb is designed to remove fleas and detect skin conditions. Before using this comb, remove any mats and tangles that could damage the teeth of the comb. If needed, apply flea treatment. Comb your dog slowly, periodically checking the teeth of the comb for fleas or debris. Pay particular attention to areas around the ears, nape of neck, and base of tail. Between strokes, dip the comb into a cup of water to rinse any fleas left on the comb.