Oh, boy.

Our kittens have discovered the cut-out in the wall where the hoses run from the hookups and drain in the hall bath to the washing machine in the back room.  I'm going to have to find a way to block it to the point they can't pull or push whatever I put up out of their way.

That's not going to be easy.  At four months old, they're 2/3 to 3/4 the size my adult cat was in her prime.  And they're stronger and smarter than she ever was, too. 

At least the dog we're going to be bringing home next Friday isn't going to be able to go through that little hole halfway up the wall...