The Brazilian shot-stopper has become a cult hero at Ashton Gate, keeping 15 clean sheets so far this season.
The benefits of non-stick gum are obvious for government authorities, which spend a lot of time and money keeping streets clean.
But Smith believes Rangers have given themselves a huge opportunity to win the semi-final tie by keeping a clean sheet on home soil.
Some experts believe autophagy, while playing a key role in keeping cells clean, may also be implicated in the development of neurodegenerative conditions such as Alzheimer's disease.
West Ham's hopes of keeping a clean sheet were hit just before the interval when defender Ferdinand was forced out of the action with a damaged ankle.
The agency also stresses the importance of keeping utensils clean while cooking any type of meat, to ensure that bacteria are not spread from raw to cooked foods.
McLeish would like to keep Hart at St Andrew's, where he has played a key role in Birmingham's impressive form this season, keeping nine clean sheets in the process.
They have now gone 20 games without keeping a clean sheet, and their defensive inadequacies go some way to explaining why Pulis chose to field Tommy Mooney as a lone striker.
They have won just six league games since Houllier's appointment last September, as well as keeping one clean sheet in 19 league matches and taking only five points from their past six games.
"It was very pleasing after getting beaten by Blackpool at home in our last game to bounce back and the lads did well, creating lots of chances and keeping a clean sheet, " Pulis reflected.
She likes coffee shops and (the bakery aisle of) grocery stores, reading about other places but not necessarily traveling to them, keeping things clean, and stalking the Harvard Opportunes, her beloved college a cappella group.
"It is these same staff who have played a key role in keeping services clean and safe who are now forced again by their employers to take action for a living wage and recognition of their efforts, " he said.
"I'm just keeping my nose clean, he said, "and doing the next right thing.
That would hardly be in keeping with the clean-guy image of Mr Ma, a Harvard-trained lawyer.
Overall, if you had to evaluate your overall risk, keeping your hands clean is the more important concern.
Madoff was particular about keeping this yacht clean, according to Wyles Hardy.
Even though the owners may not be there, there are still other things that need to be done, like keeping the house clean.
For 15 years, our country has celebrated America Recycles Day as a time to focus on conserving valuable materials, keeping our communities clean, and protecting our environment.
WHITEHOUSE: Presidential Proclamation -- America Recycles Day, 2012
We realized that data stewardship was important, and we led important meetings and discussions with the users building a plan and ongoing process for keeping the data clean.
Scotland's chief dental officer, Margie Taylor, urged parents to teach children the importance of keeping their teeth clean and to restrict sweets to meal times as much as possible.
On the other hand, the printed copy, edited and republished once in a while, serves as a barrier to faddish words, keeping the canon relatively clean.
Brand-rash is caused by not keeping the basic brand attributes clean and fresh.
It recommends collecting DU fragments, covering contaminated points with asphalt or clean soil, and keeping records of contaminated sites.
Its business depends on keeping the scalping business on the web clean.
But keeping the area inside and outside the coop clean should still be a top priority.
The region has the highest water bills in the UK, partly because of the cost of keeping the coastal region's sea water clean.
BBC: Water customers have not been given a rebate since 1998
Much play was made a few years ago of the role played by woods and wetlands in upstate New York in keeping New York City's water supply clean.
Younger workers are having a harder time finding and keeping a job because older workers won't clean out their desks.
So Democrats and Republicans need to get together, work through their differences, keep the government running so we can focus on keeping this economy growing, focus on things like clean energy, driving down gas prices.
Apparently, one of them is keeping the toilets in the L.A. office clean.
FORBES: Another use for security cameras: Keeping L.A. law firm toilets clean
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