I have never cleaned poop out of the run....10 years now.
But I use coarse wood chippings and have decent drainage(that I had to work at a bit),
and a place to store a huge pile.
You have to be careful with fresh 'green' wood chippings(chips from freshly cut branches with leaves), not to pile them.
But they can be fine if scraped off the outside of the pile and spread thinly(1-2") in the run.
This is enough to deter mold blooms, which can be toxic.
But I use coarse wood chippings and have decent drainage(that I had to work at a bit),
and a place to store a huge pile.
You have to be careful with fresh 'green' wood chippings(chips from freshly cut branches with leaves), not to pile them.
But they can be fine if scraped off the outside of the pile and spread thinly(1-2") in the run.
This is enough to deter mold blooms, which can be toxic.