We have one that looks almost identical to the picture Patt posted.
We're a family of 7. We go through a bucket a day. We have 4 buckets, as each bucket gets filled, the lid gets put on tightly and it is stored in an extra room off our porch. We have used sawdust and peat moss. I think the peat moss does a better covering job. We have also used fine mulch from the lumber yard, which is what we're using right now. Our next load from the lumber mill will be fine sawdust which we can buy for $8 for a trailer piled high. When the buckets are full we all go out to the compost pile to empty buckets. We take four 1 gallon containers filled with hot water and a few drops of Dr Bronner's with us. Each bucket gets dumped, rinsed with about a cup of water and then the rest of the gallon is added. The lid is put on the bucket and it gets gently shaken around to clean off the sides which sometimes need cleaning off.

That water is thrown out on the bottom pasture that is currently not in use by anything/anyone. We use whatever is available for covering the compost pile. What we often do is take the bagged mower with us, and mow the area down to the compost pile. A few bags of grass cover or weeds and you're good to go. No smell and very, very minimal flies. The compost pile also gets kitchen scraps, etc.
The buckets are put out in the sun to dry. Rinse and repeat

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We have a flush toilet. We bought this property on foreclosure. It was listed as having a septic tank... county has it as having a septic tank. Our inspector couldn't find the tank when he came to do our house inspection, but the area was badly overgrown. So when we moved we had a company out to come tell us the condition of our septic tank, whether it needed pumped, etc. So they came out, put down a camera and guess what.. ? No septic tank! Our sewage travels in a big old degraded pipe far from the house and dumps straight out onto the land, the area was well hidden. Charming. The company we had out quoted us $8,000 to put in a septic. So we looked for alternatives. We were prepared to put down the money for the biggest Envirolet system, but after a lot of research we concluded that they really don't work all that well.
So far this system works great for us. And hey, guess what? There is no funky smell in our house.