Your mouse pad need regular cleaning to perform well and last longer. Here's the safe way to do it without damaging sensitive components.
Fill a basin with warm water and a few drops of dish soap. Submerge the mouse pad and let it soak for 5-10 minutes.
Use a soft sponge to scrub the surface in small circular motions. Focus on areas where your wrist rests and discolored spots.
Rinse under clean running water until all soap is removed. Squeeze gently -- do not wring or twist.
Lay the mouse pad flat on a clean towel and let it air dry completely before using. This can take 12-24 hours.