Tens of thousands of houses have been used as methamphetamine labs the last decade and a cottage industry is developing around cleaning them up.
Meth cleanup contractors are called in to deal with a property when a batch explodes or police raid an operation and shut it down.
However, there is little oversight of the growing industry in most states, opening the door for potential malfeasance.
Some homeowners are often reluctant to pay thousands of dollars to make a property safe, so many houses simply don't get cleaned for years, exposing residents and sometimes even neighbors to harmful chemicals.
Hygienists and contractors find homes in different states of disrepair. Homes with no fires or explosions are easier to clean, but there is often a pungent odor, contaminated cooktops, carpets and walls, leaky roofs and dirty furniture.
Full report here.