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Central Iowa Roof Cleaning wrote:

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Lichen is always a hard infestation to properly remove. Given it is a double bacteria and has a strong root system I have tweaked my mix to help soften the lichen and still use a garden hose non-pressure rinsing process to remove.

-- Edited by Central Iowa Roof Cleaning on Saturday 12th of April 2014 09:34:45 AM

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 That's awesome Bruce! 

Bruce, that looks amazing brother, definitely got my attention