As others have said, in the US you leave it in the parking lot, hopefully in a cart return thing. Honestly, having to put a coin in to get a cart would mean I

As others have said, in the US you leave it in the parking lot, hopefully in a cart return thing. Honestly, having to put a coin in to get a cart would mean I would likely never get a cart. I never pay with cash, and thus I never have coins with me, so I would be limited to whatever I could carry. This is obviously bad for business, so I think businesses just eat the cost of having an employee round up the carts. Then again, I hate seeing carts everywhere, and sometimes find myself returning a few because they're such a nuisance. If this solves the problem, I might consider leaving a coin in my wallet to shop at Aldi instead of my cart-ridden local grocery store.