I rinse them off, cut them in half, de-seed, leave sitting on a towel for a few minutes so excess rinse water is absorbed away and place them loosely in the bag before freezing. After freezing, a whack on the counter will break them back into individual peppers then I open the bag, evacuate excess air and put back in the freezer. I usually use them up within two years and they seem ok for that period. If I find a bag I mislocated for longer than that I just throw them out as I have others to eat.