ok you dont turn the can upside down atall, and theres no need to shake the can atall there is a tube at the bottom of the can that picks it up . heres the deal , DONT USE THE CANS, its garbage and they are very dangerous. and if some one wants to be a jerk and turn you in when they see you letting some freon out of the can you go to jail and they get 10k. so have fun
