Traditional carpet contains stain resistant chemicals, flame retardant chemicals and chemicals to protect against insects. It can emit gas for up to seven years. One of these gases is formaldehyde, which is known to cause cancer.  The crazy thing is that babies spend a lot of time on the floor. No baby should ever ingest the toxins that traditional carpeting contains. These chemicals build up in your baby’s body and can cause major immune issues, not to mention the synthetic rubber backing and glues used to put the carpet together (these emit a lot of gas as well). One of my favorite “green” brands of carpet — and the one I used in Luna’s room — is “Natures Carpet.”