tablespoon of vinegar and mix it in a glass of water, and use this as a mouth wash.
in a pan boil 1 cup of water and add 1/2 teaspoon of lemon juice and few mint leaves. boil them and drink it after meal.
take 2 tablespoon of apple cider vinegar and mix it in 1 glass of water and drink it before meal.
take parsley and 2-3 cloves add it in water and make tea. drink this after meal, you will clearly feel the difference.
take mint leaves and boil them use that water as mouth wash before going to sleep. this remedy will give you good results.
guava is good in killing bacteria 