Cleaning Frequency Guideline

Environment Normal Contaminated
Outside,
Dusty
Extremely
Cold Weather
High
Humidity
Biogenic
Day Care Center 2 wk 1 wk 2 wk 1 wk
Nursing Home 1 mo 1 mo 1 mo 1 wk
Residence
(2 persons, nonsmoking)
6 – 12 mo 2 mo 4 – 6 mo 4 – 6 mo
(2 persons, nonsmoking) 4 mo 2 mo 3 mo 4 mo
(young children) 6 mo 1 mo 3 mo 3 mo
(young children with pets) 3 – 6 mo 1 mo 2 mo 2 mo
Office Building
(ground floor)
3 – 6 mo 1 – 4 mo 2 – 6 mo 2 – 6 mo
(higher floors) 6 – 12 mo 2 – 6 mo 3 – 9 mo 3 – 9 mo
Food Service
Establishment
1 mo 1 wk 2 wk 2 wk
Commercial
(retail shop, bank)
3 – 6 mo 1 mo 2 mo 2 mo