Older homes have charm and years of history, but they may also be hiding threats that can put you, your family and your pets in danger. Harmful fungi and poisonous chemical by-products can be lurking in your home if it is older than 1970. Sneaky invisible toxins can be concealed for decades and you have no way of knowing without proper testing. These potential contaminants can pose a great risk to your family in the air you breathe and the water you use.