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National Survey Finds Nearly All Adults Say They Wash Their Hands After Visiting Public Restrooms, But Most Think They Are Exception

Paper towels picked as preferred and fastest method for drying hands

PHILADELPHIA, June 5 /PRNewswire/ -- In an online survey conducted this spring, 94 percent of U.S. adults said they always wash their hands after visiting a restroom. However, when asked what percentage of other people they thought washed their hands each time after using a public restroom, 99 percent of U.S. adults felt that other people don't do so each time, and almost half (48 percent) felt that people wash their hands less than 50 percent of the time after using a restroom.

The commissioned survey was conducted by Harris Interactive on behalf of the Tork(R) brand of SCA Tissue North America and drew 2,516 U.S. adult respondents 18 or older -- 46 percent male and 54 percent female. It was conducted Feb. 26 through March 2, 2009.

Results found that visiting a public restroom is the situation that ranks highest in terms of health and hygiene concerns for U.S. adults. Asked during which situations they would be most concerned about health and hygiene risks, adults selected:

  • Visiting a public restroom, 44 percent
  • Preparing food or meals, 26 percent
  • Contact with other adults, 9 percent

Other answers were: contact with babies/children, 7 percent; contact with animals, 3 percent; other, 2 percent; and not sure, 8 percent .

"Clearly people think public restrooms present a hygiene risk and claim they are washing their hands after using those restrooms," said Mike Kapalko, Environmental and Tork Services Manager, SCA Tissue North America. "But their observations of others in public restrooms indicate that a large percentage of them are not actually doing so."

The survey results show that most adults, given a choice in a public restroom, would prefer to dry their hands with paper towels. Paper towels was the method selected by 55 percent, followed by: high velocity jet air dryer, 25 percent; hot air dryer, 16 percent; linen or cloth towel, 1 percent; and not sure, 2 percent.

The majority of adults, 59 percent, also selected paper towels as the fastest method for drying hands, followed by: high velocity jet air dryer, 25 percent; linen or cloth towel, 8 percent; hot air dryer, 4 percent; and not sure, 4 percent.

The survey also asked questions to determine opinions on the most hygienic and effective ways for drying hands and reducing bacteria levels. In both cases, the opinions reflected in this poll have been disproved in a controlled experiment conducted late last year by Westminster University in London.

Asked for the most hygienic method for drying wet hands, adults selected: high velocity jet air dryer, 41 percent; paper towel, 31 percent; and hot air dryer, 20 percent. Not sure was selected by 6 percent and linen or cloth by 2 percent.

Asked to rate each method as extremely, very, fairly, somewhat, or not at all effective in drying hands and reducing bacteria levels, adults gave extremely or very effective ratings to:

  • High velocity jet air, 65 percent of respondents
  • Paper towels, 53 percent
  • Hot air dryer, 50 percent
  • Air drying or drip drying, 19 percent
  • Linen or cloth towels, 15 percent

"These opinions giving high marks to hot air and jet air dryers are fairly widespread among consumers, but scientific research shows that paper towels are not only more hygienic and effective but that hot air and jet air dryers actually do more harm than good when it comes to reducing bacteria in public washrooms," said Kapalko.

"Controlled experiments conducted in December 2008 by scientists at the University of Westminster found that paper towel drying reduced the average number of bacteria on the finger pads by up to 76 percent and on the palms by up to 77 percent," Kapalko said. "By comparison, electric hand dryers actually caused bacteria counts to actually increase."

Test results of the Westminster study showed:

  • Traditional warm air dryers increased the average number of bacteria by 194 percent on the finger pads and by 254 percent on the palms.
  • Jet air dryers increased the average number of bacteria on the finger pads by 42 percent and on the palms by 15 percent.

As for contamination, the tests found the jet air dryer was capable of blowing micro-organisms from the hands and the unit and potentially contaminating other washroom users and the washroom environment up to 6.6 feet away. Use of a traditional warm air hand dryer spread micro-organisms up to 31.5 inches from the dryer. Paper towels showed no significant spread of micro-organisms.


This survey was conducted online within the United States by Harris Interactive via its QuickQuery(SM) online omnibus service on behalf of SCA Tissue North America between Feb. 26 and March 2, 2009, among 2,516 U.S. adults aged 18 years and older. Results were weighted as needed for region, age within gender, education, household income and race/ethnicity. Propensity score weighting was also used to adjust for respondents' propensity to be online. No estimates of theoretical sampling error can be calculated. For complete survey results and a full methodology statement, please contact Tom Lyons, Directions, (920) 725-4848. More information available at

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