Stubborn gutter stains

Not for me so far, but as with anything I would always do a test spot if you have any questionable gutters. The manufacturer says use it straight, but I diluted it 3-4 to 1 and it cleans gutters right up.

Also trying another product soon and will let you know how it works.

@mikehallyall i agree about cleansol. That stuff can clean the nastiest of gutters.

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@mikehallyall when they say straight though I think they mean after the Initial 4/1 dilution(product is ready for use is what it says after that).

Only the guilty swear innocence '; >)

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Could be! I read it as undiluted, but it would make sense as it works 4-1.

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Only a guilty person would know that one @garry.cooper