This website allows you to type in a code from any dairy product. It then tells you where it's from! Great to know where your milk, yogurt, butter, cheese, etc. is from, plus you can tell what 'name brand' does your 'store brand' product.
Put a tiny bit of toothpaste into a small cup, mix in one teaspoon baking soda and half a teaspoon water. Thoroughly mix then brush your teeth for two minutes. Remember to do it once a week until you have reached the results you want. Once your teeth are good and white, limit yourself to using the whitening treatment once every month or two.