How much we need to feed the worms depends on the size of bin and the amount of worms. Remember the 2:1 ratio for worms. Two lbs of worms is needed for one pound of food per day. The surface area of the bin should be 2 square feet if 2 lbs of waste in one week is consumed.
If we are going on a vacation, we don't need a worm sitter unless we leave for longer than 2 weeks. We could feed the worms a little extra just before we leave. This is the best part of having worms as pets! Feed them and leave them undisturbed. This way, we can go away for up to 14 days.