If five or more drops are produced the bedding is likely too wet. There are two varieties of red worms which adapt to a box environment. These red worms feed on the surface of organic matter. Red worms rapidly convert kitchen waste into usable compost. Nightcrawlers and other garden earthworms are very important for soil improvement, but won't survive in a worm box.
Earthworms only live in furrows in the soil.
The amount of worms required in a box depends on the daily weight of food waste to be disposed of. Since worms can eat their own weight in food in 24 hours, worm weight is used instead of number. Since you require two pounds of worms for each pound of daily waste, you need one pound of worms in your box. Red Worm Sources Check with the Master Recycler Composters or Master Gardeners at your local Cooperative Extension Office . The Tilth Organization in Seattle.