Originally Posted by Iride01

Do you really feel that necessary? Air leaks from a perfectly good inner tube pretty fast too. Especially those of us using narrower 25 mm tires and higher inflation pressures. I top off my tires with a pound or two every 2 to 3 days. So since I'm constantly checking, I'm not so sure emptying the CO2 is necessary.

I use that same simple inflator jppe linked. If the OP gets a CO2 inflator of any sort, then they need to practice with them. On that particular inflator, you have to screw in the cartridge to puncture it, then unscrew it ever so slightly to let the CO2 flow. So you can snug it back up and have some CO2 to top of with on the way home if you only have a slow leak or did a poor patch job.