Add your mix of garlic powder and salt
Add your water. All parts are equal so you should get a paste substance.
Place it on a cotton swab or clean your hands and use your finger
Place it in problem area and let it sit as long as you can take it. I dont mind the taste so I can handle it for long periods of time
If you would rather use it as a rinse use it with peroxide :) Peroxide is amazing, and is used in most teeth whitening systems.
This should be a temporary fix, toothaches usually mean there is an infection in your gum. Go see your dentist ASAP for an appointment.