The thing is..... to promote a good environment for the organisms you want to compost or 'eat' the feces.... a mix of sizes, shapes, and types materials is best.No garden, therefore no need for compost*. Good to know I can safely dump my lawn vac into the pen though.
*However it should prove attractive for bugs and worms, my ladies will certainly like that!
Too many leaves can form a slick pack of anaerobic stink....so might want to rethink or at least keep an eye on it.