How do I keep squirrels from eating my porch screen?

What are they after? Try eliminating that first. Go with aluminum screening instead of fiberglass. Sure they are chewing in & not just trying to get out? Last but not least, cayenne pepper / stop thumb sucking spray

Yeah...I was going to say try dabbing some REALLY hot sauce on the area.

Definitely get them with the hot sauce. Hot pepper or pepper flake scattered around the porch will also help. Good luck!

Scatter mothballs around the perimeter & exterior of your screened in porch.

Years ago I had squirrel problems, I would plant up all my pots for the season and they would unplant them in a flash. I started using Vick's vaporub just spreading a little around the pots. That did the trick now I rub it on rocks and small fallen limbs in my flower beds and that keeps the deer, rabbits cats and anything else out of my flower beds, except my neighbor's little dog, but that is only when he see's me out there. I buy the dollar store brand, so much cheaper. This really does work.

Thanks that sound good I have problems with them all the time & also rabbits.