In a bit of a different situations, I worked with a company that provided pony rides at fairs and such. All the ponies, when not working, would be in a pen together. People were constantly trying to pet them. One big concern for that was if/when the ponies got riled up and rushed past the fence...they could easily pin an arm, break an arm, break the back/neck of a kid who was climbing through to reach them... Not to mention they were ponies and some were notorious biters.
But, people don't
read signs. They also don't tend to listen.
I worked at Subway and once in a while we would run out of some types of bread. Once we ran out of all the bread
(kid's tournaments and such). We put a sign face height on the door, a sign over the bread sign and greeted every customer with "We are currently out of all types of bread but can make a wrap or salad. Sorry for the inconvience." and people would reply, oh that's ok, I'll have a footlong on Herbs and Cheese.....