I'm watching a programme called wife swap (trading spouses) and there's this insane family that live chemical free, so therefore no toothpaste. Instead they brush their teeth with a mix of clay and butter. I must say her teeth are surprisingly white, it's the infected, red inflamed gums that'd put me off. That and the fact that it 'taste like cheese' in her own words.
Other gems from this family are, they eat all their food raw including their meat
she licks the kitchen floor to clean it, she trims her armpit hair with scissors.