Last week, after changing out the dogs' food bin, I inadvertently left the empty (44lb – I have BIG dogs!) dog food bag sitting in an armchair for a couple of days, having forgotten that the bottom of the bag was greasy when I pulled it out of the bin. When I finally picked it up to throw it out, there was a grease stain all the way across the seat of the chair. OOPS. I remembered that powder or something might absorb it, but came here to look for the answer. I'm headed to the grocery right now to pick up some cornstarch! *Thanks!*