Peter is already a big boy. He plays soccer, but he still loves his pacifiers. Actually, his many different pacifiers are supposed to stay in bed during the day, but Peter often carries them with him, just in case. One day, one pacifier after another disappears. For Mom, the case seems clear: Peter is now big, and Klaus the Pacifier Mouse is in the house. The search for the Pacifier Mouse begins. Eventually, the day comes when a child has to say goodbye to their beloved pacifier. With a lovingly illustrated everyday story, the book helps both parents and children wean off the pacifier using Klaus the Pacifier Mouse. A detailed guide to the Klaus the Pacifier Mouse method is included in the book.