These are some great ideas but you just can’t protect yourself from enough things like door knobs, or fresh produce in a grocery store. The best one is the hot water knob on a bathroom sink. You turn the faucet on to cleen your hands while your hands are dirty. Then you touch the same knob with your clean Hands to turn the faucet off. Oops, your reinfected. Paper towels help a little but not enough.