Supermarket. The scouring pads are made of very long thin coils of stainless steel, maybe 2mm wide. They are tightly coiled giving an almost springy appearance. Its not really steel wool. Im thinking of adding a short segment of tubing from the inlet to the bottom of the can so all vapor must pass through the filtering material.
I'm going to look into your SS pads. Let me know how you add the inside input tube. I have wanted to add this, but have not been successful. Yorba Raptor on TS Forum added a tube, but he has not reported success yet.