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Suzanne writes,

How long does the residual effect of EcoPco D-X dust last?


Eco PCO DX-Dust, like most dusts, can last up to 8 months or longer when used inside wall voids, other voids and areas that are not exposed to the elements (and wind or air flow).  Most people apply dust products once every 6 months for optimum control.

Answer last updated on: 11/08/2010

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