My little guy would never let us use a wet cloth to "brush" his teeth, and with 8 teeth by 8 months we really needed to get him used to brushing. I bought this little brush, let him explore it for a minute, then put it on my finger making the brushing motion and smiling. After a few days of practice, he lets me brush his teeth and gums every time now! The bristles are very soft and I would think it doesn't hold bacteria like a regular tooth brush does. I would definitely recommend this to others who have babies that are hesitant to have a toothbrush or cloth in their mouth.