theres 2 ways ive done it. one ( the most humane way) is to use co2 chamber . if you paintball the co2 canaster works perfect just put pinkys into a tupperware container and give a 2 sec shot of co2 into the container and put the lid on ( dont worry co2 is heavyier than air so it wont escape if your slow to cover with the lid) in about 10 sec the pinkys are peacfuly asleep and then put them into a ziplock freezer bag. second way to do it is skip part one lol put them into a ziplock bag and toss them into the freezer ( set it and forget it lol) pinkys will last a couple months in freezer without freezer burns the best way to store them is to put them in the bag then get your vaccuum and the attachment the is used for small thin areas ( looks kinda like a long knife lol) put the tip of that into the bag about 2inches and turn on vac for 2 secs and it will vaccum seal it. make sure to keep a tight seal on the bag when sliding the vaccum back out of it. it will store for 6months-2 years like this. hope it helps.