Intended for application with a hand duster, power duster, or bulbous duster. Kills all crawling insects such as fleas, cockroaches, ants, millipedes, centipedes, and crickets. Can be used indoors or outdoors. Apply lightly and uniformly as a barrier around foundations, patios, porches, and pools. Use indoors in kitchen, corners, under appliances, and behind baseboards. Also for use outdoors: dust around patios, window sills, and door frames, along ant trails and sewer pipes and foundations. 100% food-grade diatomaceous earth.