I'm not sure if you can reuse it.. I'm going to try vacuuming it up and sifting out the larger particles but if not I have a 50lbs bag that wasn't too expensive. I tried the baking soda on the swirl flaps since I'm replacing them with plugs anyway. The baking soda didn't seem to harm the plastic so I will probably use it on the valve cover side of the intake. For the plastic intake I've been soaking it in water with dish soap and using a heated pressure washer and that's working very well.

I have some parts on order so I'll have to wait on cleaning the valves.