Mop up on dirt.
Alva
M
M
D000368:Aged; D005430:Floors and Floorcoverings; D006796:Household Work / Q000379:methods* / Q000592:standards; D016852:Housing for the Elderly / Q000592:standards*; D006801:Humans; D009735:Nursing Homes / Q000592:standards*; D012499:Sanitation; D014481:United States