Recurring opinions from r/BackYardChickens, r/chickens, and r/Homesteading. We summarise patterns across many threads rather than quoting individual users.
Ventilation decides whether it works
Strong consensusSuccess reports nearly always come with a large, airy coop. Failure reports nearly always come with a small prefab or a tightly sealed winter coop. Keepers who fixed their ventilation often report the ammonia problem disappearing without changing bedding.
Pine shavings plus dry leaves is the common recipe
Common viewKiln dried pine shavings as a base, topped with dry leaves, straw, or shredded paper to keep the carbon ratio high. Cedar is warned against for respiratory reasons, and hay is warned against because it mats and moulds.
It has to be turned
Strong consensusKeepers who describe it as low effort still turn or fluff the bedding, either with a rake or by throwing scratch on top so the birds do it. Litter left to pack down is the most common cause of the wet, smelly layer people complain about.
Wet spots under the waterer are the usual failure point
Common viewThe recurring fix is to move waterers outside the coop or into the run, or to hang them and use nipple waterers, so no part of the litter stays damp.
Mite and ammonia reports are real but not universal
DividedA minority of keepers report persistent mites or a strong ammonia smell and go back to weekly clean outs. In the threads these reports cluster with small coops, deep bedding on a solid non breathable floor, and no turning.
The compost payoff is the main draw
Common viewKeepers who stick with it cite the finished compost and much less winter work as the reason. A full clean out once or twice a year, leaving a few inches behind as a starter culture, is the common cycle.