Did you read how it works?
There are separate holding tanks, that you have to physically pick up by a handle and carry off board to dispose of. Basically, they are large buckets. Additionally, you have to place a paper liner in the bowl when you plan on generating or depositing solids. For me, I prefer my present system of the use of an electric pump to pump water in and a macerator to grind up and pump out of my bowl. We keep it clean and consequently have no noticeable foul odors on board. When it is full, we go to the marina and unload it. No thanks is my vote on the Air Head! Nice concept though, just more work and hassle than I would want.I guess that this has an advantage over a porta potty however, since both have to be hand hauled off the boat.