That's what I said in response to this on Facebook.
No telling what is on shopping carts. We always use the hand wipes to wipe down the handle on the carts. And if I ever have to pee in a public restroom, I always use a paper towel to open the bathroom door.
If I have to open a door to go in anywhere, I usually use my shirt to open it. I MUST take a shower when I get home from going anywhere. Even if I showered before going out, I have to have another one.