At different times, before finding the farm in the Dakotas, we have ?bought both golden and dark brown seeds at a nearby store The latter were easy to clean up with a brush or cloth, but the golden ones were ?sticky, regardless of their source. ?Even a fine sandpaper doesn’t help much, but unfortunately, my husband wants to stick (not a pun) to them. ?Will have to wait till morning to check on the name of our coffee grinder. It was about the simplest and cheapest offered on Amazon.