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Oral-B Toothbrush Has Developed Stains
I bought three Oral-B toothbrushes, and unfortunately, all of them seem to have the same problem. Regrettably, a peculia...r and enduring black stain forms, defying all attempts to remove it. Is there a way to address the ongoing issue with the quality of Oral-B toothbrushes? I really don't want to use