I have a no-go rule as well. My fish and ratties are my babies, and bless me, I think I would have a stroke if one of my children even ATTEMPTED to go in a room with a tank with a bat in their hands. I am 6'2 and heavyset so I consider myself kinda a big momma, and I have scared my kids into tears over touching or piddling with my tanks at ALL! I have a 5 year old girl who is very good and just ignores them, except the ratties who she loves as much as I do! But my 2 year old..... Let's just say Ramius has a skull made of concrete. He head butts the tanks, he turns off power strips, he pulls out air lines to skimmers, he slobbers all over the glass.....and when I think i have all the cabinet doors child safety locked and ramie proof, he breaks the locks! He has a fascination with being electrocuted i guess, because he will crawl under the cabinet and pull an airline and suck on it to get the water coming, then unplug something out of the power strip, get it wet, hold it by the tines of the plug, and plug it in JUST enough so that it shocks him. Which of course trips my breaker, I come running, thinking, okay, THIS is the time he's killed himself.......to discover him, soaking wet, laughing like a demented loon. I have switched to heavy-duty padlocks, but the little blighter now squeezes between the tank and the wall. The next step is chicken wire.