Also it could be costly depending by the size of your area always be treated. I have asked for refunds each and every product was totally misrepresented and poorly done. He demystifies the mathematics and explains the entire process by a Grade 10 comprehension levels. http://[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@silvia.woodw