We have flexiteak on our sugar scoops. It’s pretty durable stuff. We have been told by the manufacturer to not use any strong cleaners. Dish soap and a soft bristle brush works wonders.
If it’s stained, you can actually scrub it (with the grain) with a harder brush. It cleans almost like
wood. You can
power wash it and even sand it (with the grain) if the stains go deep. We have not sanded ours yet, but the
power washer works wonders. Not sure if you could use one in the
head, though.