It comes down to bad parenting. No matter what advice or whatever we share with parents, they are still going to do things their own way. They pay us to look after their children while they are away, not teach them how to parent. I have a separate coat room and I escort the child to and from that room at drop offs and pick ups. If a child was tantruming I would intervene and say time to say goodbye, mummy has to go to work and say goodbye and leave the coat room. Parent gets the point. At pick up if child is rude or misbehaving I intervene and say something of the jist, "You're not listening very well, so I'm going back in the house now, see you next day." I leave the coat room , shut the door behind me and let the parent deal with their child. The child has been told, the parent has been shown that I believe they need to get control over their child and I'm not going to waste my time standing around watching. I used to stay in the coat room even when children were misbehaving until I had a mum of twins come back on a Monday and say that when I told the kids to stop misbehaving and get their stuff on and go home like they were asked it upset them so much it was a whole weekend of tantruming and misbehaviour. Yes, she blamed me being firm with the children for their whole weekend!! Crazy!! So from then on I say my piece and then leave the room.