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Ronny from Lockhart, Tx writes,

Can I mix Permethrin SFR 36.8% (about 8 months old) and 10% together?

I have two bottles...one is SFR 36.8 and other one is 10% (about 3 years old). Can I mix them together in an empty dried drinking water jug - gallon size?


It is not recommended to mix Permethrin 36.8% and Permethrin 10% together in a water jug for storage. They should remain in their original containers at room temperature. They have a 3 year shelf life from the date of purchase if stored away from extreme temperatures.

Answer last updated on: 06/03/2015

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