Clean your tongue
Use a tongue scraper every morning to remove tongue plaque and freshen your breath. One major cause of bad breath is the buildup of bacteria on the tongue, which a daily tongue scraping will help banish—here are some other causes of bad breath. Plus, using a tongue scraper is more effective than brushing your tongue with a toothbrush, says Dr. Katz.
Eat ‘detergent’ foods
Foods that are firm or crisp help clean teeth as they’re eaten. We already mentioned apples (otherwise known as nature’s toothbrush); other choices include raw carrots, celery, and popcorn. For best results, make “detergent” foods the final food you eat in your meal if you know you won’t be able to brush your teeth right after eating. Next time you’re in the grocery store, pick up one of the seven foods that help whiten your teeth.
Brush your teeth with baking soda once a week
This will remove stains and whiten your teeth. Use it just as you would toothpaste. You can also use salt as an alternative toothpaste. Just be sure to spit it out so it doesn’t count as sodium intake! Also, if your gums start to feel raw, switch to brushing with salt every other day. You should also try one of these 10 natural, at-home teeth whitening tricks.