No brainer, ladder method. You can't check anything is properly clean from 10 feet underneath and window. I like them to properly clean my windows and surrounds.
AFIK using the ladder method is now illegal so it's an academic question.
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It's not banned, there are just guidelines in place now.
http://www.hse.gov.uk/press/2005/e05110.htm
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Illegal lolAFIK using the ladder method is now illegal so it's an academic question.
AFIK using the ladder method is now illegal so it's an academic question.