Berber carpet is highly durable and is often found in offices, schools, and other high traffic areas. It is stain resistant as well, and is generally more affordable than thicker plush carpets. To care about it is recommended by most professionals that Moroccan Olefin Berber should be cleaned using a low-moisture or dry cleaning process. Traditional steam cleaning with high alkaline detergents can cause potential pH burns in the olefin. These appear as large yellow or brown splotches. Yellow or brown spots also may be tannin bleed from the sugars in natural fibre carpets that are drawn to the top by improper drying usually caused by overwetting. There are carpet chemicals that can remove most of this yellowing or browning but they are very expensive, and it would be better to not get the yellowing or browning. A better, but more difficult, method may be to dry the carpet from the bottom. This method would generally require lifting up some of the carpet to install a carpet fan under the carpet, and using hot air, not just room temperature air. Regrettably, many of these stains can be permanent if not corrected immediately by a professional carpet cleaner. As with all carpets, Berber should be cleaned every 6 to 12 months to prevent permanent wear patterns.