Wish it was a bit easier, I headed down to Can tire as usual and like you guys they don't take it anymore. Had to drive another half hour to get rid of it, which got me thinking more will end up in drains or dumpsters now that people have to make an extra effort....
1) old fire extinguisher
2) empty contents
3) drill hole for installation of pressure fitting
4) pour gas into hole with funnel
5) install fitting
6) pressurize
7) locate enemies