At my former center (at the time), it didn't matter if we made it or the parents.
We once had a father who came in and was a Chatty Cathy to everyone esp me
Anyway one day he was talking and talking. He made the comment that when his son was younger (he was still on a bottle LOL) that the previous daycare wouldn't give the son Tylenol for teething so he had to pick up the boy because he would run a fever.
He said "Then I got smart! I would put the Tylenol in the BOTTLE!!!! They never called me after that!" I said "Umm isn't that umm kinda dangerous?" He said "why would it be dangerous? He was happy, they were happy and I was happy!"
Needless to say, whenever he came in with a bottle, it was immediately dumped.