Save yourself the hassle and order up some Whittaker crystal Dry: CRI approved (yeah big whoop) Green seal certified, Woolsafe Approved and cleanseal approved. They will like that.
Easy to say, who will know bla bla bla and be the fly by night asshole ruining this industrys reputation (if we ever had one).
Until you get caught and sued for breach of contract or FRAUD. Some idiot carpet cleaner here went into a LEED certified building a few years ago with that attitude and he is out of business. The managment company sued and many of the tenents / owners did as well. When people spend huge amounts of money maintaining a certain standard, some fool of a rug sucker isnt going to get by with doing the fly by night BS there.