The Ecology Works - Dust Mite and Flea Control 2 lbs Patented treatment for carpet and upholstery naturally kills dust mites and fleas University tests prove dust mite populations nearly gone after 8 weeks of use Easy to use - just mix with water - treats 800 sq ft as spray, or 400 sq ft in steam carpet cleaner Colorless, odorless and will not harm water-safe fabrics EPA registered - low toxicity with insignificant exposure risk to humans