That fresh, new smell you get from a professional deep carpet cleaning? Totally toxic. But you still need to get all the crap out of your carpets before bringing the kid home, so consider using a green cleaning service. Both Zoots and ChemDry are national chains with good reputations, but if you need to go local, ask these two questions: Are their cleaning solutions plant or chemical based? How do they dispose of their waste water? If they can’t clearly answer these questions, keep looking.