I always thought using an RV toilet paper or single ply toilet paper was so it would break down and not clog the pipes and hose when emptying the holding tank. Not to dissolve completely and disappear. We use Scott's single ply and have never had an issue. We hardly ever empty at a holding station. We wait until we get home but we're only camping for a few days at a time. Once at home, we use a Macerator attached to the waste pipe (https://www.amazon.com/Flojet-18555-000A-Portable-Macerator-Carrying/dp/B001HKZHIW) and everything goes through a garden hose into our house sewer pipe. If it's not going to clog up in a garden hose, it's not going to clog in your RV sewer hose for sure.