SODA SENSE makes it so easy!
LOVE using Soda Sense for my CO2 refills. I live about an hour away from the closest store that would exchange them. I love the convenience of just being able to drop them off in my mailroom. This week I dropped it off on Monday or Tuesday and got it back today - 5 business days later. I am so grateful for this service, and they make it so easy. Once you are done with your bottles, put them back in the box, and tape it shut. It's as easy as that. They also keep you updated as to what the order is processed and when it has shipped.