Wasn't that one of the legit uses of Polonium? IIRC, it charged the dust particles so they would be attracted to the cloth. Did the inventor mention anything about wearing a DEVO outfit while cleaning?
Polonium is a great source for ionization
Perhaps a little pricey however
German investigators say the radioactive polonium-210 used to kill a former Russian spy in London last month would have cost $25 million on the black market
http://www.freerepublic.com/focus/f-news/1752997/posts