I'm still thinking .38 Special HBWC, myself.
I agree, but that's one per cat. With garden hose and dumb cat who keeps climbing trees, the gift keeps on giving.
If the cat is dumb enough to climb again, well, you get to blast it with the hose again.
We have a 17 y/o cat that has begun to howl about 20 minutes before we get up in the mornings. I've found new pleasure jumping out of bed to run out and squirt her with a cheap household squirt bottle. She hasn't figured it out completely yet, but she knows when I come to the door after her howling, its not to fill her food bowl anymore.
BTW, the cat was aptly named DC for "damned cat" all those years ago, and of late, she's making a run to insure the name was appropriately chosen for her.