Wayne from Wormsmart NZ installed a septic system at my place on Waiheke Island using the Wormsmart technology 2 years ago. It is a totally passive system, no pump is required, with a dosing flout. I am extremely happy with it. I lifted the lid on the main tank the other day just to look and was amazed at its efficiency. There is no smell at all and all the worm pee which is much purer than traditional septic line waste is used on the orchard. Simple and really effective technology.