(Farnam) Bio Spot Active Care Carpet and Upholstery Powder kills fleas and ticks, and all stages of the flea life cycle for up to 12 months. Treats approximately 400 sq feet. Apply only to dry carpeting and apply evenly across surface. Brush or broom lightly to force powder deep into carpet where fleas and larvae exist. Wait at least 60 minutes before lightly vacuuming to remove visible surface powder. Keep children and pets off during treatment, and while powder is still visible on surface. Contains Linalool, Nylar and pyrethrins.