As for a humane way to do it…
I had lizards and everytime the cat woudl try to get into the cage I’d pray the cat witha spray bottle. I’m assuming the same would work on a screen.
i said it before, and i’ll say it again:
i hate cats.
Sycorax, they’ll never catch me alive
If I had to guess, I’d say “security screens” would be the phrase to use. They would have other legitimate ongoing uses, such as for people in high-risk areas who like to open the windows without worrying what kind of knife-weilding drug addict is going to try to get IN.
PS–if you’re ever in psychiatric lockup, forget the windows. Concentrate on the doors, particularly double-doors that latch against each other in the middle. (I used a table knife as screwdriver, myself).