Artemis Fowl Technology and Modernization Quotes

How we cite our quotes: (Chapter.Paragraph)

Quote #10

"I trust science about as far as I could throw you, Foaly. Radiation has a habit of hanging around when certain scientists have assured us it has dissipated." (9.271)

If this is so dangerous, why use it? Why not use all that advanced fairy tech to create some sort of defense weaponry that doesn't linger on and threaten fairy lives as well?