Material smaller than 2 mm, such as sawdust or finely chopped wheat, straw or hay, on the other hand, produces dust that is harmful to bird and human health.
Izinto ezincane kune-2 mm, njengokolweni oqoshiwe, noma utshani, ngakolunye uhlangothi, kuveza uthuli olonakalisa inyoni nempilo yabantu.