(without Radio Grips) MOTOROLA RADIO CLEANING SUGGESTIONS:
For general cleaning, Motorola Solutions recommends mixing one tablespoon of mild dishwashing detergent to one gallon of water (0.5% solution) to clean the external surfaces of the radio. The solution should be applied sparingly with a stiff, nonmetallic, short bristled brush, making sure excess detergent does not get entrapped near the connectors, controls or crevices. Do not submerge the radio in the detergent solution. Place the radio (IP67 or greater rating) under a faucet for rinsing. The radio should then be dried thoroughly with a soft, lint free cloth.
An alternative cleaning method is to wipe the housing plastic down with over-the-counter isopropyl alcohol (rubbing alcohol) with no more than 90% isopropyl alcohol concentration. The alcohol should never be applied directly to the radio; rather the alcohol be applied to a rag first, then the radio can be wiped down by the rag. Avoid rubbing label or adhesive areas with the alcohol-soaked rag.