Reason suggested is that beets are full of nitrates. These stop overgrowth of bad bacteria & reduces oral acidity.
However, using it as a replacement mouthwash may not be a good idea as it can stain teeth.
Juice is even more likely to stain because it is a concentrated form of the vegetable, experts warn.
Whizzed-up leafy greens, such as, spinach and kale, may be a better option – as they are less likely to stain teeth.
Swish it in your mouth, then gulp it down!