Mix the ingredients
In a small bowl, squeeze the juice of a lemon. Once you have done so, add baking soda and mix until it creates a paste. The solution should bubble up as the soda and citric acid mix.
Wipe off the saliva
Using your cotton swab, wipe all the excess saliva and the plaque off of your teeth. This ensures a clean and dry surface for the cleaning agent.
Apply the paste
Using your toothbrush, cover the front, top, and back sides of your teeth with the solution of baking soda and lemon. Allow this solution to sit on your teeth for 1 minute to work its magic.
You should not leave this solution on for longer than 1 minute as the citric acid can cause irritation in your gums.
Rinse your toothbrush and use it to gently brush off the mixture from your teeth. Use warm (not hot) water to rinse your mouth thoroughly.