EPA Recommended Carpet Cleaning Frequency Guidelines for Residential & Commercial Cleaning.

These tables are a suggested guidelines by the EPA. Actual soil conditions and cleaning conditions may require a varied schedule.

EPA Recommended Carpet Cleaning Frequency Guidelines
  Day Care Center Nursing Homes                                    Homes Office Buildings Food Service Commercial Properties
Environmental Conditions 2 Persons, Non-Smoking 2 Persons, Smoking Young Kids Young Kids w/Pets Ground Floor High Floors Restaurants Retail Stores, Churches
Normal 2 wks 1 mo 6-12 mo 4 mo 6 mo 3–6 mo 3–6 mo 6–12 mo 1 mo 3-6 mo
Contanminated Outside Dusty 1 wk 1 mo 2 mo 2 mos 1 mo 1 mo 1 mo 2-6 mo 1 wk 1 mo
Extreme Cold Weather Climates 2 wks 1 mo 4-6 mo 3 mos 3 mo 2 mos 2-6 mo 3-9 mo 2 wks 2 mo
High Humidity Biogenic 1 wk 1 wk 4-6 mo 4 mos 3 mo 2 mos 2-6 mo 3-9 mo 2 wks 2 mo