An idea at least...

These guys come to your home clean (and inspect) the kitchen extractor hood vent and/or your fireplace chimney. You get a piece of paper that says they did it. Don't think there's a law about it anymore, at least for the kitchen.

Something like here http://www.tegnergatan19.se/text1_9.html

Look what I found... in the US!! http://www.csia.org/homeowner-resources/how_to_hire_a_chimne...