MuswellMetro
Queen Bee
a 14x12 hive that appeared low on mites with 4 weeks of apiguard and then 2 weeks of thymol patties ( patties at week 5 gave a higher drop than apiguard) has just been treated with Bayvarol
because i had not made enough patty for this hive and the drop appeared within limits', i did not treat with further patties ( i have a swarm hive that is still dropping 50 a day after the same treatment}
the drop week 6 on the first hive with thymol grease patty had been 6 to 4 per day so appeared almost clear, so rather than treat for a seventh week with apiguard or patties i treated with an old batch of Bayvarol that was about to expire ( mean really ),
i had expected a lower drop, as Bayvarol is supposed to be less effective than apiquard due to resistance
BUT it has just dropped 50 mites in 20hours of Bayvarol
does that means the varroa we have are becoming resistant to Thymol dont think the temperature is too low , the temps been 18c minimum daytime 15c nightime, and it was in a Thornes api eke, and 4" of insulation above it, taped OMF exit, 10cm entrance block, thymol /apiguard place to the rear away from the entrnaceon top of frames
any ideas what's going on, i have totaly lost the plot
because i had not made enough patty for this hive and the drop appeared within limits', i did not treat with further patties ( i have a swarm hive that is still dropping 50 a day after the same treatment}
the drop week 6 on the first hive with thymol grease patty had been 6 to 4 per day so appeared almost clear, so rather than treat for a seventh week with apiguard or patties i treated with an old batch of Bayvarol that was about to expire ( mean really ),
i had expected a lower drop, as Bayvarol is supposed to be less effective than apiquard due to resistance
BUT it has just dropped 50 mites in 20hours of Bayvarol
does that means the varroa we have are becoming resistant to Thymol dont think the temperature is too low , the temps been 18c minimum daytime 15c nightime, and it was in a Thornes api eke, and 4" of insulation above it, taped OMF exit, 10cm entrance block, thymol /apiguard place to the rear away from the entrnaceon top of frames
any ideas what's going on, i have totaly lost the plot
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