True enough! It's just that I've found I have fewer colds, etc., ever since I started wiping the carts down. Then I use another wipe when leaving the store.Actually, wiping down shopping carts isn't useful. Think about shopping. You wipe down your cart, then you touch each item as you put it in your cart, (items handled by many people - manufacturers, packers, stockers, other shoppers etc.) then you touch money or that credit card thing when you pay.
Unless you touch your face without washing your hands, it doesn't matter what you touch while you're shopping.
I just wash my hands as soon as I get home.