Aluminium Foil Hacks -
Mar 02, 2021 9. Improve the Wi-Fi signal. Foil can help to improve a Wi-Fi signal. Fold it several times, and put it behind the antenna like a screen. 10. Whiten your teeth. Mix some baking soda with toothpaste, and put a thick layer of this mixture over a foil strip. Apply the strip to your teeth. Remove it after one hour, and rinse your mouth thoroughly