Advanced dual action formula deep cleans and resists dirt and stains. Allergen removal deep cleaning action helps clean and remove dust mite waste/allergens, and pet and pollen allergens. Unique technology - 1 formula with deep cleaning performance and Scotchguard protection that revitalizes soil and stain protection to carpet. UL tested and safe to use in Bissel, Hoover , Dirt Devil , and other brand full size upright deep cleaning machines, even rental machines. 2X Ultra concentrated formula. Earth friendly with biodegradable detergents and no phosphates, dyes, optical brighteners, heavy fragrances, or heavy metals. Recognized for safer chemistry by United States EPA's Design for the Environment Program. Covers 450 to 750 sq ft.