Do you use a grocery cart cover?
Nope. We just take a blanket with us and have Lucas sit on that haha. He likes to hold the bar in front of him and usually tries to get his mouth on it, so we give him a toy to play with haha. But buying a cover seems pointless to me. A blanket works just as well and Lucas is distracted by the store anyways lol. That's just my opinion though. :)