3 x Thetford Aqua Soft Toilet Rolls Pack A super-soft toilet paper that dissolves quickly. Prevents clogging and makes the waste-holding tank easier to empty. Not all toilet paper is suitable for mobile sanitation systems. Ordinary toilet paper can clog up a Cassette or Porta Potti waste holding tank. Thetford Aqua Soft dissolves rapidly to help prevent clogging and ensures the waste tank can be emptied smoothly. It is very soft, strong and pleasant to use. Comes in practical foil wrapped 4 rolls.