With the woven wire mesh, I am having a little trouble understanding what size you are suggesting to use here. When you say "woven wire fence with holes less than 2x4 inches", are you referring to something along the lines of the 2 x 2 or 4 x4 wire mesh seen and sold here? Custom Wire Cloth - Belleville Wire Cloth Co - Cedar Grove, NJ
I was looking at possibly trying something along those lines, but I was not sure if that's what you meant. Also, what alloy would you use? Stainless Steel is obviously the best choice here, but it can get a little pricey. How about galvanized steel?