Date Published: 01/06/2009 [Source]
CNN Money lists dangerous toxins that may be found in your home and how to remove them without spending too much money.
One highly dangerous "toxin" is radon gas, which you can test for inexpensively. If you have granite countertops, it may be worth investing in a second kit.
Other toxins discussed include arsenic, lead, formaldeyde, and mold.