I know puppies like to chew things up but my guys take it to the extreme. If it isn't made of steel they try to eat it. The deck, trees (the bark), their bed, the grill, the cover to the hot tub, lawn chairs, part of the privacy fence, and now the screen on the screened in pouch. They have toys and bones. They get tons of exercise. They are outside in a huge back yard to run and play (with thier toys). We also walk the every afternoon for at least 30 minutes. We play with them by throwing balls and toys. Instead they come up to the porch and eat it (trying to show a little humor here). They are 5 and 6 months old and are teething but the screen??? And yes they do the things when I am not there watching them. "Big Sigh" I feel better now. Any suggestions. I get more the feeling that they like the ripping sensation the screen makes than they do chewing. Any suggestion on how to break this behavior?