The first live in organic-rich material, like a compost bin. These include the tiger worm or brandling (Eisenia fetida) and are great at breaking down material such as household vegetable peelings.

The most common species sold is Eisenia fetida, which has many common names including tiger worm, red worm, brandling worm and red wriggler. You may also find Dendrobaena veneta, or European ...