cordless mouse

[Scarlett]

I have a cordless mouse set up that is a few years old. Even though the batteries are new, it is starting to not react very well or very fast. I tried using the mouse mat, not using the mouse mat, but still it seems to "stick". There is nothing on the underside like a ball to get old and gritty, so what can be causing this? Do they wear out eventually despite the electrics seeming to be okay?

[rojash]

got any cats or dogs?

[Scarlett]

Nope