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.
Zwishumiswa zwine zwa vha zwiṱuku kha 2 mm, sa sawdust kana fine, straw or hay, nazwo zwi a ḓisa buse kha khuhu zwine zwa vha uri zwi adzhenisa mutakalo khomboni kha muthu na kha khuhu.