Has anyone considered buying a roll of copper foil that is used in stained
glass hobby/business? It comes in 108-ft rolls and has a peel-off paper
backing that can be left for added strength (the glued back is so it sticks
to glass). The foil comes in various thicknesses, usually 1 or 1.5 mil, I
believe, and width of 1/4" or more. The price per roll is about is about $6
perhaps. You'd need to check around to see if there are any stained glass
suppliers. It's a bit expensive for keeping slugs away, but should work. For
myself, there's nothing like stripping some 16 or 18 guage copper strand
wire that can be found almost anytime in a scrap pile somewhere.