where are your gloves and your helmet?

We have a child-gate at the top of the stairs. When we first got it, shortly after we moved into this townhouse, we didn't put up the hinges, just rested it on the nearby wainscotting. One night, Phantom came up the stairs, nudged it, and got chased down the stairs. (There are still small drip-stains from where he lost bladder control.) He doesn't go that far up the upward stairs anymore, say true.