Habit is the worst enemy in the fight against varroa.
We can no longer apply the same control strategy every year with the hope of achieving the same result.
Did you know?
A varroa infestation of 3% can reduce honey production by an average of 5 kg of honey per hive and up to 13 kg per year.2
1- Varroa mites and honey bee health: can Varroa explain part of the colony losses?, Yves Le Conte, Marion Ellis and Wolfgang Ritter, Apidologie 41 (3) 353-363 (2010)
2- Maisonnasse, et al, 2014. A study conducted by INRA found that a 3% varroa infestation cuts honey production by 5 kilos (11 lbs) of lavender honey per flow, or as much as 13 kilos (28 lbs) per year.