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A Detailed Guide to Using Fenvalerate to Stun Shrimp
At night, spray fenvalerate evenly into the river ditch, then bury ground cages along the bank, and by the next morning you can go collect the crayfish that have crawled into the cages and been stunned. Although this method can catch shrimp, it is extremely toxic to crayfish and will directly
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How toxic is deltamethrin to humans?
Deltamethrin is the most toxic of the pyrethroid insecticides, with contact and stomach action, rapid contact action, strong knockdown power, no fumigant or systemic action, and a repellent effect on some pests at high concentrations. So is deltamethrin highly toxic to humans?
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