I bought their 100f 25m deal, it came very well packed, no dead and some babies running around in the bag too when I got them. The first night they were extreamly hungry, they ate tuns of goodies, some big pieces of greens, 1/4 peach, and 5 baby carrots along with some roach chow and some cerial. this was all eaten by time I got up the next day. No dead yet, they seem very active and running around. I am now just getting their temps right, its been hard, I need to get a human heat pad for under their tank, I have been using a under tank heater to keep them worm, having to experiment on how much to have under it to keep them at right temp. As for how long for you to establish a good running colony, I personally am unsure, as I am new to this too. good luck.