Though this Waterpik Water Flosser is designated as a product for kids, I purchased it for myself (and I'm 34 years old). Tooth brushing just isn't enough to get everything between your teeth and I hate trying to mess with dental floss. After years of deteriorating dental health, my gums have started bleeding and receding. However, after using this Waterpik twice a day, I've seen a dramatic improvement in the condition of my gums over the past 2 months. My gums are no longer bleeding and my teeth are no longer hyper-sensitive to heat and cold. Using this product takes less time than traditional flossing and produces much better results. Your teeth will feel amazingly clean with just the first use. This product works just as well as those that are designated "for adults" but costs about half the price of the adult versions- and it comes with cute little stickers!