Put a tiny bit of toothpaste into a small cup, mix in one teaspoon baking soda plus one teaspoon of hydrogen peroxide, 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.
Mix a paste of baking soda and lemon juice. The consistency of the paste should be about that of pancake mix. Spread the paste all along the bottom of the toilet (where it meets the floor), the toilet seat, and any other area that gets a lot of overspray. Let it set for about 10-15 minutes. Then spray the dried paste with white vinegar. Let it fizzle. When done fizzing wipe up with a damp cloth. Don't forget about the walls and cupboards on either side of the toilet.