Andrew I'm up at 2 am trying to figure out how thick 6 mil is and how thick it really needs to be. The price drops considerably for 3 or 4 mil and even more for 2 mil. It's not like we need it to stop falling meteors...or even foot traffic for that matter. For reference a Hefty Steel Sak trash bag is 1.5-1.7 mil.
-rocky b