Multi-Allergen Removal™ Formula with Scotchgard™ protector This machine formula is specially formulated for allergy sufferers. The cleaning action of our Multi-Allergen Removal formula helps clean and remove dust mite waste allergen, pet and pollen allergens. It also contains Scotchgard protector that resists dirt and stains. Unique Technology - One formula with deep cleaning performance and Scotchgard™ protector that revitalizes soil and stain protection to carpet. Advanced formula deep cleans and resists dirt and stains. Universal - Laboratory tested and safe to use in BISSELL, Hoover®, Dirt Devil® and other brand full size deep cleaning machines - even rental machines. The 1.42L bottle is concentrated to deep clean and protect approximately 450-750 square feet of carpet (2 to 3 average size rooms) depending on personal cleaning method. 1.42 Lt 450 - 750 sq ft or 2-3 average size rooms