A few years ago, Roseberline Turenne, an 18-year-old aide at a Maryland day care center, used her cellphone to take photographs showing "the naked genitals and pubic areas" of eight little girls.

Babies go through about 8,000 nappies before they’re toilet trained, according to the American Academy of Pediatrics (AAP), with about 3,000 nappy changes in your baby’s first year of life alone.