I started feeding them yearly two or three years ago, but I don't think I'll be resuming the feeding. They make a HUUUUUUUGE mess and all sorts of weeds start growing from the seeds. I'll keep the water bath for birds, though.
I took in a stray bug and that's as far as I'll go. It's possible that I'd take in a young stray kitten, but never came across one.
How often do you change your home air filter?