Pater est Pullis
Songster
Yes bales, my run is 23' x 15', but wouldn't go too heavy with the alfalfa and timothy, just a light layer, adding more when necessary. I was concerned that the new plant matter wouldn't dry properly if I went too deep, thanks for confirming that.Leave the pine straw, it's a good ingredient for the litter.
Are you talking bales of dry alfalfa and timothy?
Some of both of those would be fine.
Thing to remember is to use a variety of ingredients.
Different sizes, shapes, and materials.
Too much of any one thing could create a slimy anaerobic mess of toxicity.