This morning Archie was licking the inside of the shower curtain.
That seemed at least mildly gross, and Jo was complaining that she had been unable to get him to quit -- he just came back if she threw him out of the bathroom.
I emptied a cup of water over the top of the curtain so it came down next to him.
Made a loud reverberant thud in the tub, and he landed in the hallway, cleaning himself in the middle of a surprisingly large wet spot.
He hasn't been back in there so far, but I'm watching.