Cassette Toilet

I have both, In my conversion van I have the cassette, I bought it in Oct 2014. And used it lightly the first month, BUT you could not smell it at all in the enclosed van. A month later I spent a week in Williams/Grand canyon area and still had not dumped it, Still could not smell it in the van wow. Back at home in Oklahoma DW had hurt her foot and we brought it in her bedroom for during the night (still not dumped) she used it for a week and then it was full and I noticed a slight odor. I wondered how it would dump, (dreading it). I was literally amazed how easy it was. There was no shaking or anything. It poured out like straight water. Couldn't believe how easy it was. I would recommend them to anyone. I was going to have to work on the black system in my Avion TC(not anymore). No way would I spend the money or do all the work required to add a black tank to a TC when I can buy one of these and not have to worry about it freezing or anything. I bought the one with the little hand pump. Got it online and then discovered the Bigbox store we all know sales them $30 dollars cheaper lol, the exact same one I have. I was shocked by how well it worked, and how easy they are to dump.