First thing is I was rude and that was wrong,and for that I am sorry.The thing about cardboard is what ever over spray is in the air will be drawn to the static on the cardboard,ever rub your arm across card board and have the hairs raise,but never a spark.Also it is cheap,either way if we all contribute our idea's then together we can create a solution that is a benefit to everyone concerned.Good luck on your booth,Blake