Method 3. Dry Foam
This method is very similar to the shampoo, the difference is that the chemical is beaten, to make foam and applied right before the brushes. This allows betterdrying times. This method has the same shortcomings of the shampoo with extra unless a thorough cleaning.
Metho 4. Dry Powder
In this method, a dry product (either in powder or grains) is placed on the carpet, then with a circular brush the product makes contact with dirt, before the carpet is dry, which is surprisingly fast, after that use of a professional vacuum cleaner is required.
Similar to the bonnet, it does a good job cleaning up one third of the hair you see, doing little to remove dirt that lies at the base of the rug. Its weakness is the extraction, if not using a powerful commercial vacuum large number of chemical products can remain and over time it generates more problems.
Method 5. with Hot Water Extraction (Steam)
In this method, hot chemical solution is sprayed with pressure on the area to be treated, this product extracts the dirt, which is immediately rinsed through injectors with very hot water, then pump it all with a powerful vacuum cleaner, all in one step.
The advantage of this system is that it has the ability to remove a large amount of dirt and contaminants, is the method recommended by all the major manufacturers of fibers such as Dupont, Monsanto and Allied Signal, also of the carpet manufacturers like Shaw, Mohawk, World, and Queen.
Because this method removes more contaminants than any other, recommended by the Environmental Protection Agency and is the preferred method of the Institute of Inspection, Cleaning and Restoration Certification(IICRC).
It has the disadvantage of having the largest drying time.
Most high quality carpets that contain guarantees of appearance and texturerequire this type of cleaning every 18 months in order to maintain coverage.

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