One practical tip on top of the corrosion answers: pull the caps off before cleaning, if you can. A damp cotton swab gets into that rim seam much better than wiping the board in place, and it keeps liquid away from the switches. Dry them fully before putting them back, or the buildup just comes back faster in that seam.

I completely get this. You check it so often that you start to recognize the usual reviewers and the little back-and-forth, and then one day that small feature you have been hoping for finally lands. It is funny how satisfying something so specific can feel after waiting that long.

This rings so true. With cats it is almost always the tiny change that gives it away, like eating a little less or sleeping in a different spot, while a dog will usually make it pretty obvious something is wrong. I think that is why cat owners end up watching every little habit so closely.