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Humphrey from Oakland, Ca writes

Rainy season is coming, should we treat asap or wait till dry season. Will rain wash away or dilute Termidor?

Since Termidor claims to be effective for 10 years, will future rain affect the effectiveness of the chemical?


The key with Termidor lasting 10 years in the soil is for it to be able to completely dry and bond to the soil before any precipitation occurs. Once you treat the trench around your home you need to have no rain for a minimum of 24 hours if not 48 to give adequat dry time all the way through the treated zone. Once dry, it bonds with the soil particles and rain will not wash it away. 

Answer last updated on: 10/04/2015

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