The Silicone Ear Plugs can be inserted before entering the water, e.g. before taking a shower or a swim. They perfectly fit into the ear canal and block any water from entering the ears, keeping them dry. This will prevent water from becoming trapped in the ears and infections from occurring. If you or your child has a hole in the eardrum or tubes inserted, then it's also a good idea to wear earplugs when showering or bathing. This is because soapy water with its lower surface tension is much more likely to gain access to the middle ear through the tube.