i have one of the tall exo terra terrariums for my crestie. I always open the front doors to most the cage, but the screen top is starting to rust. My question is whether the rust could hurt him if he was to decide to climb on it. Also does anyone have any ideas other than rescreening the top. I wouldn't have any issues with that I used to fix window and door screens for a living I just was checking for some different creative ideas.