We clean ours out daily -just poo picking from the bedding. Keeps them less smelly, no flies, but the important thing is problems can be spotted early if you know who perched where overnight. Not that easy mind as you need to recognise the individuals in low light. But it has helped us frequently -with sour crop particularly.
We're buying posts now to subdivide the new enclosure properly. The tripod posts we have holding the mesh at the moment take up a lot of space.
We have a sick Blue Laced Wyandotte cock at the moment. Some internal problem which Baytril has not resolved. Think he has a tumour in his lower neck obstructing his airway and throat, but that's just a guess. Fortunately it is a breed that we can get here.