Thanks everyone for the tips. I'm amazed at how well the cleaner works, but it just doesn't cut it for some of the bottles. I feel like I've tried everything, but there's still some junk stuck on the bottom. FYI - I've rigged a wire hanger with aluminum foil, duck tape, and pantyhose and it is working a little better. It's a work in progress but I'll write back when I've got the ultimate cleaning contraption figured out.