good grief, a paper sack to put used TP in. that is so gross. where do you think you are ? living in Mexico? that's what they do down there but here in the states we have much better sewer systems. a tank on a RV is a holding tank, you do not need to worry about whether the paper dissolves or not. Just that it doesn't break down in your hand when you are using it. it's as simple as that, the rv tp is thinner than northern or some of the other stick house paper but who cares. use a fair amount of water and dump when you are 3/4 full and call it good.