Possible Clues:

• They are capable of wiping the floor with those who know how much DIRT needs to be collected
• Washers are less fat inside
• Soaps and vacuums
• Domestic workers to whom mugs are taken?
• Loser's destination
• They keep everything spotless
• George Jefferson's business
• Sent to them and your clothes are done, and you're done too
• Spot removers
• Domestic staff