The feet have two layers—a rubberized one and an adhesive pad underneath.

If you're reusing the feet, be very careful not to separate the two layers or damage the feet.

Carefully slide the point of a spudger under the large foot near the front of the mouse, making sure it goes under both the foot and its adhesive pad.

The foot recesses have a small notch that makes it easier to slide your spudger under.

Gently slide the spudger farther under the foot and lift until you can grip the pad with your fingers.