Yucky Cockroach is a fun-filled book about the purpose of cockroaches. Children learn that if they don't clean up after themselves, the appearance of cockroaches is inevitable. The sight of cockroaches is not pretty. Cockroaches startle us, especially when we see them late at night. Cockroaches come out when there is a mess, crumbs on the floor, or leftover food. This book teaches children about the importance of taking an active role in cleaning their environment so that cockroaches remain out of their sight.