And the radiation is gone.

"One of the guys suggested Cillit Bang. He remembered seeing it dissolve the grime on a coin in an advert on TV and thought it was worth looking at. I'm very glad we did. We tested it and found it very effective."

http://www.telegraph.co.uk/finance/newsbysector/energy/6078265/Nuclear-experts-clean-radioactive-site-with-Cillit-Bang.html