Re: Bug Screen.
I think it depends on the magnets.....if they are those lame refrigerator-type magnets, then I can't see it working once the magnets get misaligned, etc. If they are the super-powerful rare-earth magnets, then perhaps....for $19.95 though, I doubt they are rare-earth magnets. After reading-up on the screens available out there, and how the Sportsmobile product Velcro wouldn't stick, I ended-up sewing my own barn-door screens. I bought a couple of dozen of the 1/2" dia. rare-earth magnets (found at any sewing or craft store) and sewed them into the edges of two pieces of screen. Rather than the two screen halves connecting in the center via magnets, I just overlapped them about 12", and there is no problem for us or our dogs to get in or out.
It works well......it takes only seconds to slap the little magnets onto the door frame, and they hold well. The fact that they move/give a bit is probably preferable, because they allow the screen to give if you bang into the screen accidentally. We can even close both doors without taking the screen down if we want to walk away from the van for just a short time. I forget the exact costs, but the cost of the screen material plus magnets was probably $50+. At $19.95, these Magic Screens might be worth a try, if only for the value of the screening material.
By the way, next time, I would choose a woven cotton screening product rather than the fine mesh-like synthetic screening that I bought, because the plastic does not hold up as well to sharp objects or heat. Also, I chose white, which isn't as dark or creepy as the olive/black screens out there, but it does stain easily. I am not an expert sewer, so it took me hours to sew this thing, but if someone had a bit more skill at the sewing-machine, it could go quickly. If you didn't want to sew, epoxy might work also.