Bissel Multi Allergen Biodegradable Carpet Cleaning Formula Concentrate 60 oz. (Pack of 4)Bissel introduces this cleaning agent that makes your carpet cleaning an effortless breeze. This biodegradable detergent permanently removes tough set in stains like pet stains, red wine, cola, coffee, tea, fruit juice, motor oil, and more. The carpet cleaning formula boasts a 2X concentrated formula of allergens cleansing. Bissell carpet cleaner contains no heavy metals, optical brighteners, phosphates, or dyes that are harmful. Use this carpet