When a cleaning technician goes trouble-shooting for a carpet maker or a carpet retailer........
mum's the word. Never offer an opinion to the consumer or even to a mill representative in the presence of the consumer.

Professional ethics dictate not saying anything to color the situation in any way. Our job is to do exactly as instructed and then privately report to whomever arranged the spot removal, general cleaning or demonstration. The report should be concise and factual.

Never comment on a perceived problem or anything beyond the scope of cleaning and maintenance. Don't comment on installation, carpet selection or any carpet defects even if they are obvious.  Be polite, say as little as possible, do your job and get out of there.