Magic Mouse Not Very Smooth When Physically Moving It Around
I have a five year old magic mouse that's still going great.

I had the same problem with the mouse feet wearing down  to the point where the battery cover was making contact with the desk. It became gritty and not very pleasant to use. I then coated the feet with teflon tape and also covered the worn spot on the battery cover. The tape is extremely thin and won't affect tracking. It feels like the mouse is new. The tape is durable - I haven't had to change it yet and the roll contains enough tape to do a LOT of mice.

The tape I used is ½ inch wide. I applied it as follows:


Remove battery cover and measure the length of the feet. Cut a strip of tape the same length.
Start from inside the battery cover by aligning the tape to the vertical part of the feet (at this point the tape should be perpendicular to the bottom of the mouse case. Use your fingernail or something like a toothpick to seat the tape to the fee.
Gently roll the tape around the feet and under the 'v' between the feet and the mouse case. Again, your fingernail works great for this.
Use a single edge razor blade or exacto knife the trim the excess tape.


Enjoy your 'new' mouse.