If you generate ½ pound of food waste per day, (generally, for a family of two) your worm bin should measure at least four feet in surface area (a 2' by 2' bin) and you should fill it with one pound of worms.
If you generate 1 pound of food waste per day (typical for a family of four) either go with two 2' by 2' bins, each with a pound of worms, or find or make a bin that is at least 3' by 3' and fill it with two pounds of worms.
Keep in mind that the bin does not need to be very deep. Red worms live and eat in the top six to eight inches of material.
