What is a good way to whiten teeth that is cheap, easy, and not dangerous to health or teeth?

Please help me ! I need suggestions!
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There are some good whitening solutions for your teeth – and they won't harm your teeth or your health. Kits with whitening strips or trays are good solution and you can do this at home. You can use this homemade mixture weekly and it works well. There are other options that are available through your dentist, too, but they do cost more.
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