We had the same problem on our second camping trip the snake worked for us but you could see toilet paper and had to move it to get it to flush we also use RV paper and the tank additive to break up the waste after each empty. The tank design seems to be the problem why they would only have a 5 inch depth is odd but have to work with it. Use one ply and make sure all guest don't us paper as they do at home. good luck and happy campint