Triclosan is found in many different products, including soap, antibacterial wipes, toys, clothes, cutting boards, and many other places. This chemical, though, has some potentially harmful effects. Studies involving animals have shown that some bacteria that are exposed to triclosan may become resistant to antibiotics, and this has raised some concern about its effect on fertility. Even more troubling is the suggestion that it increases the risk of cancer. For humans, research has shown that this harmful chemical can affect hormones and interfere with proper fetal development.