There are many bins that are available for purchase that come with trays for the migration of worms from lower processed trayers to higher beginning bin trays. These bins may also contain a tap which collects the worm urine or worm tea. Worm tea is a concentrate fertilizer that needs to be watered down prior to using on plants due to the high nitrogen percentages (diluted 1:10 ratio). The tea may also be used as a natural pesticide that can be sprayed onto plants once diluted.
The bins begin with bedding either a coir or shredded non glossy paper. Then some dirt and water is added and mixed such that the mixture is as wet as a dampened sponge. Then red wiggler worms are added.