Anyone who wipes there can even if there is no visible substance...is a moron...there are more germs on a door handle than on a damn public toilet seet...there are germs everywhere, anything you touch. And only 1/6 ppl actually wash there hands when they goto the bathroom...so that means that there is small amounts of shit and piss everywhere...get the **** over it and stop worrying so much....HOW THE HELL DID OUR PARENTS SURVIVE WITHOUT ALL OF OUR WONDERFUL cleaning solutions. Get over yourselves. Germs are everywhere, but germs are good sometimes, makes you stronger, and a strong immune system will protect against more serious diseases...

Stop worrying...