Use baking soda as a mouthwash instead of bottled mouthwash. Use about a half teaspoon of baking soda and a little water, swish and spit. It freshens your breath and helps maintain a healthy pH balance in your mouth. Also, baking soda is a fraction of the cost of commercial mouthwash. Keep a small cup of baking soda next to your bathroom sink.
Or make your own mouthwash using baking soda and some essential oils. You can find recipes online.