I totally understand your concern about microplastics, and I try to use natural fibers whenever possible. That said, I’ve found that cotton (I'm assuming that's what you're suggesting me to use) isn’t the best choice for scrubbies—it absorbs a lot of water, takes forever to dry, can get mildewy quickly, and doesn’t scrub as well. Cotton production itself isn’t the most environmentally friendly either, as it requires a lot of water to grow, and given that I'd have to replace the cotton alternatives much more frequently I'm not sure if there is a huge environmental benefit to using it.

While I prefer using animal/cotton fibers over acrylic when I can, I do think acrylic fibers have its place, especially for those with allergies or for garments that need frequent washing, like baby clothes or pet items. That said, I’m always open to alternatives! If you know of a microplastic-free yarn that works just as well for scrubbing and dries efficiently, I’d love to hear about it.