What is your teeth cleaning routine?

I have white teeth.. and I brush twice or sometimes three times a day & floss. But I see some people that have white ass freaking teeth, and I'm like how the F do they have such white teeth ( obviously brushing) but I wanna know ...

What do you do.. (other then brushing) to keep your teeth a bright white?

What is your secret ?
What is your teeth cleaning routine?
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