Bleaches, tile cleaners, mildew removers, oven cleaners, and drain openers are very strong chemicals that can discolor or dissolve carpet fibers. Acne medications containing benzoyl peroxide, a very powerful bleach, are capable of permanently damaging your carpet and most other fabrics as well. Professional cleaning will remove more oily or sticky soil which builds up in the pile. When cleaned regularly, it is much easier to remove this material. The carpet in a typical household should be cleaned every 12 to 18 months, depending on the number and age of residents and the presence of pets.
Most professionals use hot water extraction, also known as steam cleaning.
Other cleaning methods include absorbent pad or bonnet cleaning, rotary shampoo, and dry foam or powder. It's to your advantage to use a professional cleaner. Between experience and equipment with more extraction power than the rental units available to you, a professional cleaner can do a better job than you can do yourself. If you choose to clean your own carpet, avoid over-wetting the carpet and using too much detergent. Your carpet should be dry in 6 to 12 hours.