Company dedicated to offering hard to source parts for the Land Cruiser Community
store.landcruiserheaven.com
I used LCH and was very happy with the results for my drivers belt. I don't have a before and after photo, but the restored belt is not quite to the "like new" level, but pretty dang close.
For the 3 other belts, I extended them all the way out and closed the door on them so they were hanging outside the truck. Then sprayed them down with water and chemical guys fabric cleaner. Used a brush attachment on my drill to clean, then rinse, repeat as necessary. Worked quite well. Opted for the LCH restoration on the driver belt because it needed more than a cleaning - the self retract was very weak.