Based on answers I got from a previous post, I was planning to line my new chicken run with some chipped pine bark and pine needles I got from the power co. after they trimmed along power lines. The coop will have deep litter with store-bought shavings (not cedar). HOWEVER . . . a member just noted on another post that "one poke from a pine needle" could invite a bacterial infection resulting in bumble foot. Are chickens' feet really this sensitive? Would scratching in pine needles likely result in an infection? If the odds are small, I'd like to try the pine mulch because (1) it would look better than bare dirt, (2) give them something to scratch around in, and (3) it smells wonderful!