A good carpet shampoo generates a whole lot of foam and is long-lasting. Because strong agitation must produce the foam, an excellent shampoo must have lubricating properties. This will lessen floor covering tangles and the possibility of harm. Though this technique of carpet cleaning was once extremely popular, it fell out of favor in the past due to issues with re-soiling. Remember, the goal of an excellent carpet shampoo or dry foam is usually to attract dirt to it. This implies any residue left behind will, therefore, continue steadily to do that. Many discovered that the clean left behind employing this method didn't last and that dirt seemed to reappear at an elevated rate.

Another controversy which surrounds this technique of carpet cleaning may be the addition of optical brighteners in many of the merchandise. These "brighteners" are in fact a special dye added to the shampoo
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