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My mom is the head of the cleaning department at one of the larger hospitals in Norway, so I've really been taught how to clean, properly. Using as little water as possible is actually the best.
Damp floors, and water puddles in small cracks in said floors are the best possible breeding ground for bacteria. How do you get said cracks? By using too much water. Use feather dusters for dust - on hospital floors (non-surgical rooms, that is, not baths and ORs etc.) they use mops that use static electricity to catch the dust, and then clean with damp mops afterwards. If the floors are really dirty, a third mop is used, a wet one. Both the second and third mop are taken directly from the washing machine - having been thru the spin cycle they are damp. And they're room temperature. Only in really recalcitrant spots do the cleaning staff use soapy cold water, but even that is so diluted that they only use 2 milliliters of soap per liter of water. the days of tossing half your bucket of hot soapy water on the floors are over.
The same goes for dusting. The rags come straight from the washing machine after the spin cycle, so they're still damp, not wet. In other words, they don't use soap, other than on the toilets and sinks. The rags used are simple non-weave ones.
The dust is more important than coffee stains on the floor, etc, as the dust gets in your airways, and everything in touching height is more important than lower down, because that's were you put your hands, your food, etc. And if people complain that it isn't clean, you can smear some undiluted soap in the corners, or under the steps - most times, people associate a really strong scent of soap with 'clean', and if it doesn't smell, it isn't clean. They're wrong.
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