If you can, dampen a piece with a spray bottle of water, lay it in the green grass, and you will be surprised at what
the chlorine of the grass does to a piece. It took all the brownish spots out but not the rust spots, but it did lighten them. I have tried the Restoration and I did not like it. I would try the water on one piece, let it lay for a few hours, and watch it so the dogs do not get on it. haha After one piece, you can decide what to do with the rest. Water is much cheaper then a bottle of Restoration for $13.98.