I use one I purchased off ebay, wouldn't be without it.
I use Ajax Liquid Household Spray Cleaner "neat" in mine (I'm in Australia, don't know what your equivalent would be), and rinse with plain tap water and let air dry on paper towels.
I even clean Life-Like early model chassis and open frame motors as a unit the same way, just spray off with contact cleaner instead of water (make sure and re-lube anything that needs it.
Try for a unit that does 45,000 hertz (I think that's what it's called) at least (I think this is the vibration rate).
