By When you see the word “Dry” on carpet cleaning ads don’t be fooled. This is not like taking your clothes to the Dry Cleaners. The word “Dry’ is to highlight that they use a low moisture way of cleaning. Your carpets are not rinsed and their “Chemical” is left in your carpets or whatever they are cleaning. This is not the best way to have your carpets, rugs or upholstery cleaned. Not just according to me but Carpet cleaning – WikipediaThis is what Wikipedia says about Bonnet Cleaning. aka. Tank and buffer cleaning.
After a cleaning product is deposited onto the surface as mist, a round buffer or “bonnet” scrubs the mixture with a rotating motion. This industry machine resembles a floor buffer, with an absorbent spin or oscillating pad that attracts soil and is rinsed or replaced repeatedly. The bonnet method is not strictly dry-cleaning.
To reduce pile distortion, the absorbent bonnet should be kept well-lubricated with cleaning solution. It is not recommended to dunk the bonnet in a bucket of cleaning solution and then wring it out with a mop-bucket wringer, as this will make the bonnet too wet. It is important to change or turn the bonnet early, as bonnets can become filled with soil in just a few hundred square feet. Once loaded with soil, the bonnet will not hold any more; instead, it simply moves the soil from one area to another. An overly wet bonnet also deposits residues that attract soils when they are dry, creating the need to clean more often. It is recommended for robust and not for high floor carpet, it swirls the floor. It distorts pile and grinds dirt deeper in carpet fiber, and also has an abrasive effect.[4]
When there is a large amount of foreign material in the carpet, extraction with a wet process may be needed. Normally, the spin-bonnet method may not be as capable of sanitizing carpet fibers due to the lack of hot water, for this a special thermo machine is needed, here the buffing machine is equipped with a heating, to heat up the bonnet, but a post-cleaning application of an antimicrobial agent is used to make up for this. A small amount of water is required with spin-bonnet carpet cleaning. It only cleans the top of the carpet 1/8 inch but it is very fast for wide areas. However, bonnet cleaning is not the best mechanism for completely removing the chemical that is pre-sprayed onto a carpet. It is recommended that only surfactant free or encapsulating products are used.
