Well its hard to say for me because this is the way I feed. I thaw out all the mice (usually about 80-100 at a time) and get my deli cups ready. I feed all my babys-juv's in deli cups outside of the cage. I take the snake, put it in the deli cup, introduce the meal and close the lid. I stack it to the side and move on. By the time I am done with the last meal, snakes 1-50 are done with there meals, and I take the lid off the deli cup and set it into the tub, and close it up (the container on the rack). I do this with all of my snakes, and by the time I am done putting tubs 50-100 into the rack, I go down to snake cage 1-50 to take out the deli cups. (They crawl out on there own) and by the time i am done with 1-50, 51-100 have crawled out, therefore I take there cups out.
I have a few each time that would rather not move much after eating, and I leave them in there until I am done feeding all my adults, then I remove the container.
Sounds tough, but the whole process only takes about an hour.
Ryan