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Expiration of unopened pesticides

Rebecca/N. IN/z6A
2 months ago

Does anyone know if I can use Malathion that has been sitting, unopened, in my unheated gardening shed for 2 yrs? I also have pre-mixed neem (ready to use from the store, not mixed by me, in a gallon jug). It sat out in my shed for only 1 winter. I havent bought more Neem yet, in case either are still good. TIA.

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