Allertech Laundry Additive, 8oz. Concentrated laundry additive eliminates dust mite allergen in any wash temperature Use with your favorite laundry detergent Only 3/4 oz (1-1/2 tablespoons) in each wash load works to control dust mites Non toxic, and safe for all washables. Contains benzyl alcohol, tea tree oil and methyl salicylate 8-oz bottle treats  11-12 regular wash loads & 20-24 regular.