I used to have cats! I'm actually going to get me a couple of kittens when I get my own apartment after nursing school. But, I've never had my cats make me purchase another of something. When my male pooped on my keyboard, I removed the keys to try and clean it and I just couldn't get the smell off. So I jut replaced it. lol.
So far -knock on wood- I've not been pooped on by my corn snakes. And this male is the only one who's nailed me. He's pooped/peed on me at least three times and I've only had him since September. He even pooped on me at the show I got him from. I have a video xD
As for the probes, I REALLY like them. The colors make them easily distinguishable. I use that and the walmart brand of KY jelly. Works like a charm!