Varroa Treatment | Bayvarol Strips | Beehive Care

A beekeeping treatment used to control Varroa destructor mites—one of the most serious parasites affecting honey bee colonies.

Acting as a slow-release pest control system inside the hive—the bees unknowingly act as carriers, spreading the treatment to kill mites throughout the colony

 What they contain

• Active ingredient: flumethrin (a synthetic pyrethroid insecticide)
• Each strip typically contains about 3.6 mg of flumethrin

 How they work

• The strips are hung inside the hive, usually in the brood chamber.
• Bees walk over them and pick up the chemical.
• The bees then spread the active ingredient throughout the colony, exposing mites.
• The chemical attacks the mite’s nervous system, killing it.

Key features

• Highly effective – can reduce mite levels by up to ~99% in one treatment
• Slow-release action – works over about 6–8 weeks
• Easy to use – hang strips between frames
• Bee-safe (when used correctly) – low toxicity to bees but lethal to mites
• Treats multiple mite generations during the application period

 Typical usage

• 4 strips per brood box (standard hive)
• 2 strips for smaller colonies (nucs)
• Leave in hive for 6–8 weeks, then remove

⚠️ Important notes

• Do not reuse strips
• Avoid use during honey flow/harvest periods
• Rotate with other treatments to prevent mite resistance