How long does Harris termite powder last?

While stored in its packaged, powdered form, Harris Termite Powder will last indefinitely. Once Harris Termite Powder has been diluted and applied, active ingredients will be picked up and brought back to termite colonies, compromising the infestation. Reapplying Harris Termite Powder can improve upon its overall effectiveness, and in our experience, we tend to wait 2 to 3 days before reapplying.

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