DIY teeth whitener

Victoria
Has anyone tried the baking soda, water, peroxide and toothpaste mix on your teeth? Did it work for you? It says to brush your teeth with it once a week but I wanted to see if it actually works before I keep trying it. What are some other home remedies I can use to help make my teeth brighter? I drink a lot of coffee and smoke so its starting to make my teeth look gross 😭