With the Bissell proheat essential carpet cleaning system you can easily get out the embedded dirt, stains, allergens, and odors that vacuums can't reach. The rotating dirt Lifter power brush and a pressurized spray gently loosen and lift dirt from your carpet, surprising you with just how much comes out. The patented 2-in-1 tank system makes carpet cleaning easy with fewer trips to the sink. Exclusive heatwave technology helps maintain water temperature throughout the carpet cleaning process. See how great your carpets can look and feel. Based on particle size. Strong spray and powerful suction removes dirt, allergens and odors embedded in carpets. Large capacity tanks (1 Gallon) mean less time filling and more time cleaning. An 8 ounce trial size bottle of professional fromula is included. Heatwave technology provides constant heat and helps maintain water temperature during the cleaning process. 6 cleaning rows of rotating powerbrushes plus edge sweep brushes loosen and remove deep dirt from carpets. Tough stain tool and spraying crevice tool are perfect for spot cleaning and upholstery.