content: Greased Lightning is a great cleaner if you buy the right strength. The stuff sold in grocery/discount stores is watered down. You have to go to Lowes or a hardware store to get the professional strength. Be careful though; it will take the varnish and stain off of furniture and will ruin painted surfaces like kitchen cabinets if sprayed directly on them. You have to spray a damp cloth and then clean a painted surface starting at the bottom of the cabinet. If you spray it directly on your cabinets it will leave marks where it runs down. But for cutting gunk and grease it's wonderful.