We installed a C-Head in our homemade boat last year, despite feminine misgivings as to esthetics, technique learning curve, and waste-handling workload, but we barged ahead, because dealing with holding tanks, pumputs, stuck valves, permeated hoses, pumpout logs and discharge locks seemed far worse.
Long story short, we are delighted.
-There is NO odor.
-We have had no fly infestations so far, only place in this swamp with no bugs is our head.
-Cleaning and maintenance is very quick and easy. Transferring solid waste is quick and easy. No disassembly necessary.
- The five-gallon secondary solid waste bin holds a lot more than a holding tank would have, months worth at our current rate of usage, and if it fills, we have a spare 5-gallon bucket-and-snap-on lid here somewhere. Try THAT with a full holding tank, miles from the nearest working pump out station.
-Parts for this brand are, for the most part, available at our small-town hardware store. We changed our minds about the toilet seat, and replaced ours for <$15.
-The cabinet is compact, with a narrow footprint, sits flush against the bulkhead, and is no taller than a household toilet. The churn crank needs no space to the side. Very efficient use of space, and comfortable to sit on.
-Need another urine container? At least for this brand, here's another empty water/milk jug. Easy! Cheap! Readily to hand. Unobtrusive to empty, light-weight. No worries about middle-of-the-night overfill. Capping the jug, tucking it in a totebag, and pouring it in the next marina toilet is easy, neat, and at least as environmentally sound as any alternative. For that matter, urine is sterile. If some should accidentally be spilled overboard in open water,
I wouldn't be horrified. Not that I would do such an illegal thing.
-Our male guests, so far, seem cool with the "EVERYbody sits to pee" rule. Anybody who finds that requirement an affront to his masculine identity can (perfectly legally) head for the lee rail.
So, it is not a flush-and-forget-it solution like our home toilet, but no boat head is. This, so far, seems like a very reasonable solution to what appears to be a vexing problem to most boaters.