My advice....Sit back and laugh? Just kidding!

I have a couple of water nuts here too. I have yet to figure out how to stop them. I just keep mopping it up! Pepper Jack loves to attack the water fountain we have. It's a big game to him and I can't get him to stop.
As for the toilet, I just leave the lid up and let them have at it!

I was of NO help what-so-ever was I? Maybe someone else can help because I have no idea of what to tell you.