After reading the full article, I'm not sure the abstract line "Colonies
treated with amitraz were healthier and had better survival than those
treated with OA vaporization. In conclusion, OA and/or brood interruption
did not provide sufficient Varroa control." is an accurate summary of the
findings.

Instead, a number of other lines might be much more indicative of the
intention of the study:
"Using a generalized linear model, we could not detect significant
differences in the survival of colonies at the end of the experiment
between the different treatments (P > 0.05), likely due to the sample size.
"

"Our inability to control Varroa effectively regardless of OA treatment
suggests that the current labeled dose of 1 g per brood chamber was
ineffective, at least under the conditions we maintained in our study. . .
. We found that OA vaporization at the current label rate in the United
States of 1 g per brood chamber is ineffective at controlling Varroa."

"Here, we only observed 30% mortality in the non-treated control colonies,
which surprisingly was the same level as the colonies treated with three OA
applications. Additionally, 40% of colonies treated with brood interruption
and three applications of OA died by the end of the study. This
demonstrates the lack of efficacy of OA at the labeled rate and brood
interruption during the fall."

While a wonderful paper to compare brood interruption OA vs non-brood
interruption OA treatments, it hardly speaks to the wonders of amitraz over
OA. To me, I got four things out of this paper:
1. Current treatments at 1g per colony are likely insufficient.
2. Amitraz resulted in a better survival rate than OA treatments, at 1g per
colony.
3. Brood interruption (with or without OA) was insufficient in controlling
mites.
4. The sample size was too small to make long term meaningful management
decisions moving forward.

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