Apivar
Apivar's main ingredient is Amitraz, a synthetic chemical that paralyzes Varroa mites, causing them to fall from bees, combined with a slow-release plastic polymer strip that ensures continuous delivery over several weeks for long-term control. The formulation is simple, primarily just amitraz and the plastic carrier, designed for effectiveness and to minimize residues in the hive, making it a popular chemical option for managing Varroa mites. 
Key Ingredients:
Amitraz: The active acaricide that kills the mites.
Plastic Polymer: A specially designed strip that controls the release of amitraz over time. 
How it Works:
Slow Release: The polymer strip releases amitraz continuously as bees come into contact with it.
Contact Action: Bees pick up the molecule, which then spreads throughout the colony.
Mite Paralysis: Amitraz excites and paralyzes the mites, causing them to lose their grip and fall off the bees.
Long-Term Efficacy: This slow-release mechanism targets multiple mite generations, leading to high control rates.