Friendlys does! Unfortunately, if I remember correctly, we “cleaned” them by letting them sit in seltzer and then wiping them off before reattaching them. I’m only now realizing that we went to so much effort to do that, but using the same sanitizer as the soft serve machines would have been significantly more effective and easier.

It at least keeps things like black mold or giant bacterial colonies from getting hold, but it’s kind of pointless.