I know it seems weird to floss a toddler's teeth but yes, you should do it. Two reasons.....one, it prevents tartar and plaque build-up which halts cavities from forming and is the key to good hygeine. Two, this habit will carry over into your child's everyday life and will become a consistent part of her routine. Nothing is worse than having to hold down a young child in a dental chair while they have to get a Novocaine shot or multiple shots for cavities being filled or worse. And it happens more than you know. One rendition of that and you will floss this kids teeth every hour!! Use the cute little dental floss hand-held picks that they make just for kids. You do it the fist few times and then start having her help you along the way. Make up a song and sing it while you are flossing or floss your teeth together! My mom used this tactic on me and all my brothers when we were younger and it worked. I am proud to report that I am 41 and I have never had a single cavity....ever! Both of my teenage daughters also have zero cavities and no dental work. My husband, well, he didn;t get so lucky and I don't think he knew what floss was until he was in college. Four crowns, two root canals, and two 4-quadrant deep scalings later....this guy is a hot mess of expensive and painful dental work because he didn't get the point of it at a younger age. My daughters see this and all they can say is...."Thank God for you, Mom, because I would lose it if I ever had to go through what Dad has had to endure!" Hubby is a great flosser now.....and has been cavity free for over five years because of it. Floss away, my friend. A great smile is a gift that your child will have for the rest of her life!