I suggest that the Nature's Head Composting Toilet option should only be considered by owners with an anal "(b : of, relating to, characterized by, or being personality traits (such as orderliness, frugality, and obstinacy) considered typical of fixation at the anal stage of development : anal-retentive — often used in nontechnical contexts to describe someone as extremely or excessively neat, careful, or precise") personality. I'm one of them. I think you can identify the personality traits of the rest of the Oliver owners active on the forum who have opted for this solution. :)
Don