Helpful Tips in Using this Slow Feeder Insert ●If using a deeper bowl, make sure to only fill it up to the height of the slow feeder insert. ●This slow feeder insert does not rotate nor designed to move around. Ensure that the bowl surface is flat and free from dirt, oil, or grease to ensure proper suction. ●One trick to improve suction is to moisten the inside of the cup with a bit of water. ●Only use regular dishwashing solutions to clean the slow feeder insert. Do not use cleaning solutions with bleach, corrosive detergents, or harsh chemicals. ●This product is not microwave and dishwasher safe.