What I would like is somewhere that can provide authoritative answers to this and similar questions. I am interested in stuff that wont affect toilets and cess pits. I was told that the bio washing tablets were ok but then told not. I would never use blue stuff for that reason but is all green stuff safe? Similarly I use WC paper that is environmentally friendly on the assumption that it breaks down easily and wont block a public WC if I need to empty somewhere and cant find an alternative. It seems to me that if there was a code or guidance that motor homers could be encouraged to follow we may help reduce negative impacts that fuel opposition to wild camping.