Where can I get rid of 8-10, 20lb. Propane bottles I no longer need. Almost all are refillable

You can take to Colorado Iron and Metal but they have to be cut in half. Coop only fills them, don't exchange that I know of don't know if blue rhino places will take others - generally only when exchanging

If I was still in Fort Collins, I'd have taken the 10 pounder for camping. They sell for twice as much as a 20.

Larimer county dump recycles them

Thanks everyone