This Baby Bottle Washing Brush is perfect for both glass and plastic baby bottles. The foam tip is perfect to getting into base corners of a baby bottle and for pressing into the teats. The long flexible handle gives you leverage to rotate and bend the brush to clean the sides and base.Made in the USA since 19761. Wash in a sink of warm water with a little detergent2. Insert the brush into the bottle & rotate the brush pressing against the side & base3. Rinse well with clean water to remove any detergent residue4. For the teat press the foam tip into the teat to clean5. When the brush gets dirty, rinse in warm water, or place in a dishwasherTIP. Make sure you air dry all parts of the baby bottle seperately to avoid any water residue. The White Magic Dsih Drying Mat is a perfect solution for air drying baby bottles.