That is never the case, and it may require some understanding of the processes behind cleaning your carpets. This misconception is likely to have come as a result of homeowners doing the cleaning themselves, as opposed to getting professional help. As a DIY solution, some homeowners may have used shampoo in order to clean their carpets.

Unfortunately, rather than doing that, it achieves the opposite effect instead. Each shampoo session will leave behind residue that stays stuck in between the fibers of the carpet. As it builds up, it will begin to mat the carpet. 

This in essence makes it easier for dirt and other contaminants to be stuck in your carpet. The cycle of shampooing, leaving behind residue, and dirt build up will only worsen the conditions of the carpet.

The oblivious homeowner may be unaware of the damage they are causing. Calling in the experts and professionals will alleviate these issues and more in the most efficient of ways. They rely on proper equipment, cleaners, disinfectants, and proper cleaning and drying methods that will prevent such problems. 

In order to prolong the longevity of your carpets, look to vacuum them two to three times weekly, and get a professional clean annually. This will make sure that the soil, germs, and bacteria built up over time will get taken care of. For families with younger children or pets, you might want to consider a professional clean up to three times a year.

Rather than replacing your carpets every once in a while, give them a good cleaning so you get the most out of them instead.