I need your opinion...

[catland]

You said they live in the garage? Is there power to it? Maybe you can work with your neighbors to create a warm box with a light bulb or something. We did that, just with an old milk crate, a theromstat, some styrofoam, and a light bulb. (it was a long time ago, sorry I don't have any pics).

Whatever happens, I do think that every effort should be made to keep them together. Good luck.

[QueenScoopalot]

Styrofoam bins are often thrown away by large vet clinics, and these make the best shelters for cats in the Winter.I've used them for ferals for years now, and one bitter cold Winter when I was feeding, one feral wasn't moving and I thought she was dead in the bin. Turns out she didn't want to come out of her oven! I stuck my hand in there a few minutes later and it was very toasty inside! It would be nice for the two kitties to live inside seeing as they are seniors, but I don't think I'd let in one without the other. If you can get a bin big enough for the two to get in...let me know and I'll give you tips on how I set them up for maximum warmth.

[moosmom]

The garage has no heat. Basically there are two boxes with quilts in them and feeding dishes. They rely on me and the girls in the law offices to feed them during the week. Toni and Joe come on the weekends. There's really no way to set up any heat or lights in the garage.

I wouldn't think about separating them.