I found this website that explains the effects of positive ions and
negative ions. Negative being good for us. (same as EMF). I got the
idea from him. I placed little cups of it behind appliances etc. and
what a difference. Zialite is negative ions and said to absorb toxic
substances including radioactive materials. I got my Zialite from a
pool supply place 25 pounds for $25.00. It's all natural volcanic ash
safe for children and pets. I put 2 cups in my refrigerator too.
http://www.causeof.org/suggpollution.htm