I sterilize nothing. Actually I don't clean anything in an unsterile fashion either. But then I don't share much either, so it's mostly me wallowing in my own filth and germs
But I do put paper on the toilet seat in a public bog if it's absolutely necessary to sit, I use paper or a foot to flush and wash my hands thoroughly.
And I will not eat food my children have already bitten into. Or share drinks with them. Icky.
Oh and I put a towel between my head and the bench at the gym (mostly because I may leave a purple stain there if i don't, but admittedly cooti-avoidance is also a factor), but I only "clean" the equipment after I use it because it's the rules.
