That should help. I use hydrogen peroxide ( diluted about 3 to 1 ) in my waterpick.

Also, when I zap my teeth/jaw, I will sometimes hold the positive paddle ( red wire ) with my hand in a plastic bag or wear a rubber glove to hold the paddle against my jaw. Placing the negative paddle ( green wire ) in the arm pit helps reduce the signal traveling through my arm.

This would not be the normal application but in this case, it helps concentrate the signal to the affected area without presenting other issues.