No place for them at any game especially a raggy one.
My lad uses the phrase 'I wouldn't wipe my dads arse with that' when the sellers mither us. I find a simple 'fuck off' works better as there's no need to slow down while passing.
If people must buy one at least keep it in a pocket until they get away from the ground.
Nothing worse when watching the highlights to see red in the seats.