This company claims to have a plug that you plug into an electrical receptacle in your house and it is supposed to neutralize harmful EMF radiation!
They get $50 for this too...
Product description
The Aulterra whole house plug fits into any electrical outlet to retune the wiring. Also, it prevents outside EMFs from getting into the house. One Aulterra whole house plug works for most homes and offices buildings (up to 5,000 sq.ft).Aulterra is a homeopathically activated combination of natural paramagnetic and diamagnetic elements which neutralize the effect of man-made EMF exposure on human DNA.
There are 174 customer reviews. Some of them are delightfully sarcastic in nature and worth a read.