Unless you lived with one, don't believe everthing that you read about them. I had a unit in my summer place for fifteen
years. It is not all roses, believe me!!
Some points for consideration....
With lack of power off-season what happens to process?
What is the "loading" when everyone comes to visit??
During the rainy season, how well does the unit dry its-self??
During the operation does the aroma hang low it the air??
Does all the Aroma vent through the stack or back into room??
When it gets filled and the "trap door" no longer operates properly, can you raise the seat to avoid sitting directly into it??
Oh yes and let us not to forget the necessary cleaning function that must be done from time to time.
A true green eco product? I don't think so... I,ve been there and I tried to love it... but playing with this product and the bi-products is not for the weak of heart.