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Marion from Deer Isle, Me writes

If Evergreen Pyrethrum Concentrate freezes, is it still effective?

How long can I keep it stored and still have it effective?

Answer:

If Evergreen Pyrethrum Concentrate goes back into suspension after it freezes, it is still effective. If the product has particles in it after shaking the product up, it should not be used. The shelf life of the product is 3-5 years. 

Answer last updated on: 07/11/2017

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