to amitraz, flumethrin and fluvalinate ... Both LC50 and LD50 values were considerably higher in honey bees than in varroa mites, showing that a wide margin of safety exists between effective doses ...

Varroa mites have been a problem to honeybees for several decades, and have been fought by humans using a deterrent called Amitraz. But in recent years, varroa has become resistant to Amitraz. Now, ...

By Nathan Gregory MSU Extension Service Entering this spring, beekeepers will be tasked with rebounding from the worst winter ...