After owning my Nature's Head Composting toilet for over a year now, I can honestly say "I LOVE IT!"
I spent March 15 thru June 3rd of 2015 in my little Scamp
trailer using the composting toilet on a part time basis. I needed to empty the urine container once to twice a week depending on how hydrated I stayed at night. By adding about a quarter cup of white vinegar to the pee bottle before attaching it to the toilet, there was very little odor either in use or when disposing of urine in campground bathrooms. I chose to put my "wet" toilet paper into a plastic bag inside of a small covered trash container, and disposed of it about the same frequency. I could have put all toilet paper into the composting toilet, but I didn't know how fast it would fill up that way, so only put the "soiled" tissue into the Nature's Head. Also I keep a spray bottle of vinegar water to "flush" after use, 2 or 3 sprays does it.
After my extended trip, the trailer was parked at our house and used as a guest room a couple of times throughout the year, probably for a total of about another week.
In February of this year, we took it on a camping trip to Arizona, where it was used by my husband, daughter, granddaughter and myself for another week and a half. Six days into this trip, I finally emptied the "compost" for the first time. Turns out I really didn't need to empty it then, but now I know better how long I can wait. The "compost" was clean, dry, light weight
and had absolutely zero odor. There was recognizable toilet paper in it, but nothing else was recognizable. I double bagged it, and threw it away in the campground dumpster. Added the bag of koir (?) (shredded coconut shells), and a little water, and we were ready to go. Took all of 10 minutes, if that.
Keep an eye on the level of the "pee" bottle, you don't want to overfill it, especially not in the middle of the night.
2 year olds bottoms are not big enough for their poop to go directly into the holding tank. Had to wipe a little poop out of the bowl. No big deal.
Kind of expensive.
No smells, no blackwater tank, no hoses, no chemicals, no dumping of stinky messy anything. No extra weight
carrying extra water for flushing
No cutting a camping trip short, or having to pull out to go dump because your holding tank is full.
My only question is when I sell my Scamp
, do I take it with me, or buy a new one for my next trailer.