A few drops of food grade hydrogen peroxide added to a
little water in a glass should be enough to make your mouth foam
and cleanse. Don't use hydrogen peroxide, though, if you have
metal fillings, because they react. Don't use regular drug store
variety hydrogen peroxide because it contains toxic additives.
Health food store varieties contain solvents from the bottling
process. See Sources. Never purchase hydrogen peroxide in a
bottle with a metal cap.
For persons with metal tooth fillings, use chemically pure
baking soda or just plain hot water. A healthy mouth has no odor!
You shouldn't need a mouthwash! If you have breath odor, search
for a hidden tooth infection or cavitations.