When was the last time you had your own carpets professionally cleaned? If you’re like the average U . s . household, it was most likely some time in the last 12 months – and you will probably wait at least another yr to get them washed again. The Environmental Protection Agency recommends floor coverings in residential houses are cleaned every 6-12 months if A couple of or fewer individuals live in the home who is non smokers. For larger family members with both kids as well as pets, the EPA recommends a professional carpet cleaning service every 3 months.