It is highly recommended that you vacuum regularly with a well maintained quality vacuum cleaner. If using a less expensive vacuum then it is recommended that you be sure to keep it cleaned just as you would a more expensive unit. It is also important to know when the unit is in need of replacement and do so without hesitation as soon as you are able. Depending on the amount of use (Foot Traffic) your rooms get between 1 to 2 times a week is recommended. Different pile types can require different cleaning strategies, large weave Berber for example: This is a very tough and rugged pile that will hold up for years and look great for years. That’s great but don’t let the looks deceive you, berber of any kind whether it be the small or large thick loop weave needs to be cleaned more often than your eyes would leave you to believe. But no more often than any other carpet, again thick weave berber’s can look great for several years but once you start to see any foot traffic patterns on them those areas are at least 30 times dirtier than the rest of the rug NOT GOOD!