Yeah corrugated plastic sheets works pretty well on all kinds of stuff. I also put it on my deer stands and used a sheet to make a roof for my hatching cage. You go buy a sheet of the stuff new they are proud of it. Wait till after an election you can get a truck load for free. I have a corner lot that despite the fence and no trespassing signs idiots want to put signs up for broadband internet and realtor crap. Every time I see one I pick it up and put it in my pile. They don't have my permission for their ads so it's litter on my land and free for me to take.I have signs on the outside of my porch too.