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Ruth from Boca Raton, Florida writes

If Food Grade Diatomaceous Earth is used before rain, will it be useless?

Answer:

Food Grade Diatomaceous Earth can be washed away if it is applied in open areas and it rains outdoors. Most folks choose to apply Food Grade Diatomaceous Earth directly in cracks and crevices around doors, windows, vents, places where cables, pipes and wire enter through the structure rather than all over the ground. This keeps the product protected and it keeps the product where pests are known to try and gain entrance into your home.

Answer last updated on: 03/24/2013

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