There are so many ways of teeth whitening. You can either go by the expensive ones or stick to the inexpensive at-home teeth whiteners. The choice of the product/s to be used depends solely on the person who would be investing. But I would suggest that you can always try out at-home solutions for safe and better whitening. However, for the convenience of all you readers I've tried listing some of the helpful tips to assist you in whitening your teeth:

Baking Soda for Your Teeth: Use baking soda for brushing your teeth and you'll see your stains vanishing in no time. This can be done once in a week.

Baking Soda and Regular Salt: Baking soda when mixed with ionized salt and water can help in keeping the teeth clean and white. A paste needs to be prepared with these two ingredients and water and it is to be used for brushing the teeth. This helps in removing the plaque and also whitens teeth. But remember, this should not be swallowed by any means. Also, this should be used just about once in a day or else your gums would get a raw feeling. If you sense a raw feeling, you need to lessen the use.

Baking soda and hydrogen peroxide: These two ingredients when blended together can prevent bacteria from developing in the mouth and also helps in fighting against tooth decay. This mix can essentially be used for treating your gums and as a whitener as well. Avoid swallowing the mix.

Banana Peels: The inner part of banana peel is very beneficial for improving the color of your teeth. It actually helps in whitening the teeth and is phenomenal. I suggest all of you must try this natural remedy at home after brushing your teeth. Yellow bananas are better than the green ones. The results will manifest in a week's time.

Brush Your Teeth Well: You must brush your teeth after every meal. This would help you rinse all the food particles sticking within the mouth and in between your teeth.

Bar Soaps for Your Teeth: I know it sounds absurd, but it really works. Bar soaps can actually help in whitening your teeth; it works better than any toothpaste available in the market today. Also, bar soaps are effective in killing germs and removing tartar and plaque from your teeth. You can either use regular bar soaps or soaps for teeth that can be availed from any super market or nearby store. But make sure that you don't over-use soap as it might be toxic.
Brush Your Teeth With Soda Bicarbonate: Take some soda bicarbonate in a spoon and add a few drops of water. Make a thick pate and use this for brushing your teeth. You can expect unbelievable results in very less time.

Avoid Certain Beverages: Beverages and red wine can lead to the formation of stains in your teeth. Give up tea, coffee and other beverages to prevent stains.

Avoid Certain Food Items: You must give up certain food items if you actually want to whiten your teeth. Coke, berries, curry, balsamic vinegar, soy sauce, citrus fruits, tomato sauce, Popsicles, tobacco, beets and dark fruit juices are a strict no-no!

Have Teeth Whitening Fruits And Veggies: Indulge in apples, celery and carrots to whiten your teeth.

Avoid Sweets: Sweets can also cause stains in your teeth and so you need not have much sweets. Also sweets can make your teeth more sensitive.

Strawberries for Teeth Whitening: Have strawberries or spread mashed strawberries on your teeth to enhance the whiteness.

Use proper toothbrush: The toothbrush you use for brushing also has an important role to play. So use proper branded brushes and change them at least once in 2 months.

Whitening your teeth isn't really easy and you cannot expect over night results. So try these methods and carry out regularly to see the difference.