ANSWER: Deep cleaning is a carpet-cleaning process that loosens and removes most of the harmful dirt and debris, in addition to ground-in dirt which may be deep down in the fibers of your rugs and carpets. Not only does it protect the investment you have in your home, but parents of young children, pet owners, and allergy sufferers may find deep cleaning especially beneficial.For more information, please contact a BISSELL Consumer Services Representative by calling 1800 811 183 or australiacustomerservice@bissell.com.