Sounds like an interesting concept, I too would want to know how good of a warranty the Polychute has and how limited
it might be. Nothing like a company coming up with great product (idea) to in turn combine with a hit or miss Chinese pump or something with a suckie warrantee.
Another thing important to me on any of these poo chutes, is how well (with what ease) they can be cleaned before storing back into the coach?