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by chameleon_world 2164 days ago
"4. Butt waste is not biodegradable: Filters are non-biodegradable, and while ultraviolet rays from the sun will eventually break them into smaller pieces, the toxic material never disappears."

Yes the break down but it seems they break down into smaller plastics or microplastics, which are being found in rain https://science.sciencemag.org/content/368/6496/1257