Recently, I picked up my MTH remote and to my horror discovered that apparently some mice had taken a liking to it by chewing off the button surfaces!
We've never really had a severe mouse problem, but we do live in a rather wooded, semi-rural neighborhood and there's no doubt there are mice around. There were other telltale signs, like people knocked over on the layout and the occasional mouse dropping left behind.
I've had that remote in that very spot for probably 15+ years and this is the first time this ever happened. I presume they liked the finger oils that would be on those buttons. So, I got out my backup remote, put it on my workbench in the next room in preparation for installing that one into my TIU. A few days later, I look and it too had been attacked, right on my workbench, in a room that we are frequently in and out of, at least during daytime hours.
Sigh! So the moral of this story... keep your remotes secured. Mine are now (too late) in a plastic bag.