Yes I do.
I have 2 metal lawn chairs with vinyl white and green strapping. Part of a set I bought over 20 years ago. The chairs were fine but the plastic straps were disgusting. I debated on whether to throw them out but couldn't see throwing out 2 perfectly good chairs.

Last spring I bought a bottle Lestoil. It was something we used on our trailer to get rid of the grime. I used it right out of the bottle--just put some on a wet rag and attacked them. You wouldn't believe how clean they came. I rinsed them off with the hose and voila--2 extra lawn chairs that I wouldn't be ashamed to have anyone sit in.

Where can I buy Lestoil? Is this something sold at Home Depot or in Wal Mart? Currently I have been using brillo pads and even hard, vigorous scrubbing hardly has any affect on the stains.

I'm from Canada and I've bought it at our grocery and Walmart, but maybe they don't sell it in those stores in the States. It is made by Clorox. I have seen it on E-Bay.