I sure hope it's not a prank every time & it is just the fountain doing that because that can ruin those pumps in a heartbeat and who pays for that cost?
Bet that little prank wouldn't happen again by those kids if they ever got caught doing it and had to clean it one good time, or had to pay to get it cleaned.
Man, my Grandmother would have beat my a** if I even thought of pulling a stunt like that. 4951