The Applicants propose to make no more than three treatments per year of
two cardboard strips, coated with liquid product per brood super, during
the spring, summer and fall. Approximately 181,000 honey bee colonies could
be treated in all counties throughout Washington, Idaho, and Oregon,
requiring 2,172,000 strips for three treatments. The total amount of hop
beta acids applied would be 4,170 kilograms (2,172,000 × 1.92 grams of hop
beta acids per strip), which is equivalent to 9,194 pounds, if all honey
bee colonies in the PNW were treated.
https://www.federalregister.gov/articles/2010/11/17/2010-28816/hop-beta-acids-receipt-of-application-for-emergency-exemption-solicitation-of-public-comment

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