What I did was put the can or cans in the freezer for a few hours to chill them down good. Then quick check the spray nozzle to make sure it is dead or really weak. Then flip the can upside down, and poke a small hole in it. That lets any weak pressure out. Next open the hole up larger and pour the contents out into the container I want it in. Using a triangular can opener works. But one could use a sharp nail and open the hole up as needed for pouring. You don't want to seal up the container tight right away as when the stuff warms up a little the volatiles like propane will tend to come out. So you need to watch out for it.