She goes about once every 15 minutes, and leaves what Ed calls a "cinnamon roll". It's tiny. And if you take your shirt you can just "flick" it! LOL
Actually, she loves to hang out with me on my shoulder when I'm on the computer, but she'll also play on the desk - and I keep a paper towel on the desk to just quickly wipe up what little messes she makes (it's about the size of a small "dot" label). Meanwhile, she attacks the paper towel! LOL