I use the square cans (20x20x8cm) for the cultivation of sphagnum moss for Dendrobates and carnivorous plants. This is the highest quality plastic, stable, non-fading and completely odorless. Only one thing I do not understand - probably the most expensive and therefore always resist maligned discounter offers for 3.29 Euro at the required Show prices appear to me greatly exaggerated, even if the postage credited to and recognizes that this is no cheap China sculpture, foul-smelling and possibly also tastes foul. In the book I would pack up my Steiner Box granddaughter without problems even breakfast, but it is surely intended.