These chapters contain the first advancing of a moral through the songs of the Oompa-Loompas. Their first song discusses how to change a child who is nasty and brutish into one who is lovable. They say that greed is a terrible character trait and that parents must guard against it. They suggest that by putting a child through a seemingly torturous cleansing process, the child will come out better for the experience. Mr. Wonka verifies this when he tells everyone not to worry about Augustus. Throughout the story, Mr. Wonka maintains everything is bound to come out in the wash. Here, Dahl is espousing the type of cleaning or purification that the Oompa-Loompa song suggests, and although the characters reappear at the end of the book, some critics have been outraged by the parallels of this justified punishment with the Holocaust and the Final Solution. However, these complementary plot points may also just emphasize that people cannot give up on bad children. Instead it is incumbent upon their caregivers to help their children overcome their demons, even if the process is painful for all involved.