Wipe the surface with a soft nonpaper-based cloth moistened with water.

Turn the device over to dry the adhesive surface of the pad by air drying it until the moisture is gone (approximately 8 hours).

If the pad is no longer sticky, it maybe dirty or soiled. Wipe the surface with a soft nonpaper based cloth moistened with water. If you have used your pad 30 or more times, you can purchase replacement pads, [link].