The Metropolitan Mosquito Control District http://www.mmcd.org/ is mapping honey bee hives to avoid non-target species impacts.
Pitcher Plant in Bloom
From the MMCD website:
"As for adult mosquito spraying, the pyrethroids used by MMCD pose no measurable health risk to humans and animals, but are toxic to fish and bees. This is why we do not spray near water or blooming crops. Permethrin is only applied to dense vegetation where mosquitoes rest during the day, and resmethrin is applied as a fog during the evening when mosquitoes are active but bees are not. All of our materials are registered for use in Minnesota and are among the safest available. As professional applicators we take pride in only making a treatment when necessary, following label directions, and minimizing the potential impacts on non-target species. We live in this area and enjoy the outdoors too, so we take a personal as well as professional interest in protecting the environment."
Call Mike McLean; Public Affairs: 651-643-8391 to make sure they are aware of your hives or 651-645-9149 for more information. The MMCDistrict covers the Twin Cities, Minnesota metro area which includes Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington Counties.
If you call please thank them for their efforts to minimize affects on honey bees.