But they keep fundies from getting pregnant (sarcasm)
[font size = 4]Why Using Toilet Seat Liners Is Basically Pointless
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http://www.huffingtonpost.com/2014/06/17/toilet-seat-liners-covers-pointless-bacteria-germs_n_5500416.html?ncid=fcbklnkushpmg00000063
Are you one of those people who always grabs a paper liner before sitting down on the loo? Surely, you do so to prevent catching a disease from someone else's, er, splashes that may be left on the toilet seat.
Well, turns out, those liners may have more to do with providing comfort and reassurance to the user than actually doing anything to prevent disease, says infectious disease specialist Dr. William Schaffner, M.D., a professor of preventive medicine at the Vanderbilt University Medical Center.
"Thats because toilet seats are not a vehicle for the transmission of any infectious agents -- you wont catch anything," Schaffner explains to HuffPost. Toilet seats were once thought to be a way of transmitting gastrointestinal or sexually transmitted infections, but that idea has since been refuted in research.
Basically, the reason why those liners exist is because of toilets' inherent "ick" factor, he says.