Yeah, it pissed me off, I tried to get it off best I could with a damp towel. He's not terribly head-shy, so it worked out.

An urgent question! My lamp dimmer is totally not working. The second I unplugged it though, the heat mat heated up. I covered the sticky side in aluminum foil, and the temp gun is giving me weird low readings on that side, so I'm just taking the temp readings on the other side. Any clue about the lamp dimmer though? I'm also ~testing~ it on a human heat pad, same results, even when the dimmer is on full blast.