There's a bunch of stray cats that live on the grounds of an apartment complex down the street from me - I also worry about what they'll do when it gets really cold. They hang out on the grate where warm laundry-room air comes out, but what if no one is drying clothes? There's always tons of cat food everywhere cuz people feed them. I wonder if the people who maintain the area would mind putting a shelter in there for them...
Is there a trap, spay and release program for them? It doesn't keep them warm but it keeps them from multiplying.
Also, you could just build some shelters and put them out there. I hear those styrofoam coolers with a hole cut in the side, filled with some straw work well. Just weigh it down with something.
Update on our stray kitty:
