Related Clues:

• Use a doormat
• Common settler
• Exhaust, with 'out'
• Make clean ... or dirty
• Objects may collect it; people, probably less often
• Use a moist towelette, say
• See 18 Across
• Common settler?
• _____ storm
• Housekeeper's quarry
• Look for prints
• Use a dust rag on
• Housekeeper's concern
• Powdered matter
• Fine powdery material that can be blown about in the air