 For those who don't want to have a system with central maintenance, the earth toilet is excellent and this is a toilet where we have typically two chambers, we have urine diversion and it should be, toilets should be inside a house. So a lot of ecosun toilets are built outside the house because they are still copying what is done in many areas because the toilets are so smelly and so they also built these toilets outside but the toilets must be so good that they can be inside and they should be inside and so a toilet like this could be installed inside a house emptied from outside and operated in a way without water and also being very cost efficient. There is a lot of material in there this is from the book at ecological sanitation that is also available online.