The Toilet fresh-up Set is a simple and economic way to make a used Cassette Toilet as good as new. The set includes a waste-holding tank with a toilet seat and cover, along with the free toilet fluids to freshen up the toilet. You only pay for the waste-holding tank! The Toilet fresh-up Set is available for Cassette Toilets C2/C3/ C4 *, C200, C400 * and C250. Additional waste-holding tank for longer trips? Even then the Toilet fresh-up Set is a perfect solution.