You will need to get alcohol pads or a bottle of Isopropyl (Rubbing) alcohol and paper towels.
If using alcohol pads:
* Use the alcohol pads to rub the sticky rubber coaating off the device, revealing the plastic underneath.
If using paper towels:
* Get a paper towel damp but not wet with Isopropyl alcohol
* Rub the paper towel on the sticky rubber coating. It should slowly come off
* Use a separate paper towel ro dry the alcohol off