It is fairly common for commercial offices or businesses to consider installing Olefin carpet, sometimes known as Olefin Berber.  Everyone has heard how this type of synthetic fiber is miraculous at resisting stains.  That IS true; it IS stain resistant.
However, there are some pitfalls to Olefin as well.  Olefin loves….oil.  It is basically an oily fabric that attracts oil.  While the “oiliness” does mean is tends to repels many stains, it – on the other hand – can be difficult regarding oily soil.  Also, high traffic areas can look soiled but that often is the light reflecting differently off of areas where the carpet fabric loops have been crushed.  
A cleaning pre-spray made specifically for Olefin or Berber is highly recommended.  But one must be really careful with the pre-spraying of stains because Olefin is also, unfortunately, known for “wick back.”  This means if too much wet spray is used, it gets to the backing and “wicks up” staining substances to the surface!  
If you have Olefin or Berber in your business or your home, good vacuuming habits are a must.  Don’t over soak or use an overabundance of treatment spray when trying to take care of a stain.  And, most importantly, when you have the carpet professionally cleaned, the encapsulation method – which is low moisture carpet cleaning like Cincinnati Maintenance provides – is practically imperative.