Keep these in my car

I've always been a germ freak so when you have kids you really want to keep things sanitized and clean. I keep these in my car and wipe down seats and handles along with stern wheel and buttons. You have no clue who is sick and what they have been touching. We also use them at home on our fridge door and bathroom sinks plus door knobs. Seems to always be effect and says it kills 99.9% of germs.