Tidy Trailers - they are the best! I checked out on line all sorts of ways to dispose of junk that could not be sold, donated or given to a relative.
For us, Tidy Trailers offered the best option. They deliver a trailer, leave it on your premises for 48 hours so it can be loaded with stuff. Then they come and pick it up. Their prices are very reasonable. They phone to say when they will arrive, provide instructions on how to load the trailer properly and come back and take everything away ... and you don't even have to be home for that part. We didn't need a big bin. I was able to stuff the trailer full of all kinds of things - I didn't realize we had that much crap.