"Cleanup" redirects here. For the Wikipedia term, see Cleanup.

Cleanliness is the absence of dirt, including dust, stains and bad smells. In more recent times, since the germ theory of disease, it has also come to mean an absence of germs and other hazardous materials. A recent shift has now taken place to recognise that ‘dirt’ may play a useful role in our immune systems. This shift in thinking can be traced back to 1989, when David Strachan put forth the "hygiene hypothesis" in the British Medicine Journal. Strachan looked at the records of 17,000 British children and found that the greater number of older siblings they had, the less likely they were to come down with hay fever—a disease which, despite its name, is far more common in the city than the country. Strachan wondered if the older children were bringing home more viral infections to their younger siblings, priming their immune systems so they could better tolerate pollen. The "hygiene hypothesis" has now been linked with asthma, allergies, intestinal diseases including Crohns disease, childhood leukaemia and atopic dermatitis and the list is growing. It can apply to humans, animals, clothing, eating utensils, plates, pans, cups, etc., food, other movable objects, floors, windows, walls, toilets, etc.

"Cleanliness is next to Godliness," a common phrase, describes humanity's high opinion of being clean.

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Cleaning - Twitter Search

@DrYoung Good Luck with "Andy's" dental cleaning! Such great pet parents to understand that dental care is important for pets too!
TheGREENIESComp (The Greenies Company) Wed, 04 Nov 2009 14:39:10 -0000
@DrYoung Good Luck with "Andy's" dental cleaning! Such great pet parents to understand that dental care is important for pets too!
Have a headache from hell! Feel like crap n have so much to do 2day. Laundry, cleaning n 3/90min tests 2 take! Agh!!!!!!
grettajenna (Nadine Sherow-Owens) Wed, 04 Nov 2009 14:39:09 -0000
Have a headache from hell! Feel like crap n have so much to do 2day. Laundry, cleaning n 3/90min tests 2 take! Agh!!!!!!
Cleaning while listening to Z100...
radarcarl (Carl W) Wed, 04 Nov 2009 14:39:00 -0000
Cleaning while listening to Z100...
Mmm..there's nothing like waking up to the smell of the oven on it's cleaning cycle. #fb
brianmcspadden (Brian McSpadden) Wed, 04 Nov 2009 14:38:50 -0000
Mmm..there's nothing like waking up to the smell of the oven on it's cleaning cycle. #fb
after boxing lessons do groceries, some cooking for 2night and 2morrow) and cleaning up some stuff and the dishes and next go 2 skatepark!
JDutchflower (Marieke Snellen) Wed, 04 Nov 2009 14:38:46 -0000
after boxing lessons do groceries, some cooking for 2night and 2morrow) and cleaning up some stuff and the dishes and next go 2 skatepark!
had a delicious breakfast... now its time to get some cleaning in before I go to campus.. someone keep me company
KellyDeniece (Kelly Newsome) Wed, 04 Nov 2009 14:38:34 -0000
had a delicious breakfast... now its time to get some cleaning in before I go to campus.. someone keep me company

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