/ck/ - Food & Cooking

I'm OP, I tried baking soda again.
But this time, I borrowed an electric circular teethbrush (I've never used one of those, I only brush with manual toothbrush). And I brushed 3-4 minutes with baking soda.
It definetly cleaned a lot of the stains I had, not all of them but it cleaned a lot of it. Maybe I just needed more horse power?
It doesn't explain why the stains only appear now after years of drinking yerba maté but anyway.
I'll brush my teeth with electrical toothbrush with baking soda once every week, since baking soda can ruin your teeth permanently if you use it daily.