Reusable Bamboo Interdental Brushes

So great to have an interdental brush that won't put more petroleum-based microplastics in my mouth and body, or the Earth. Out of five brushes, three lasted for about 30 cleanings, but the other two broke much sooner. The price seems high for somewhat uneven quality. I love these brushes for health and environmental reasons but would like to see them last longer for the price.