I teach a subject called sustainable futures and we used one in the canteen along with our outside compost bins/bays. It does work well if you follow the instructions and the liquid fertilizer it gives out is great. I believe the contents needs to be in the ground for about a month before they can then be used on the garden, to ensure the rest of the decomposition occurrs. If I had any garden, I would get one of these to use as fertilizer.