Ohio Use and Applicator Law Regulation Ag-6567.01 requires that "No pesticide which is required to carry a special warning on its label, indicating that it is especially toxic to honey bees, shall be dispensed over an area of one-half acre or more in which the crop plant is in flower unless the owner or caretaker of any registered apiary located within one-half mile of the treatment site shall be notified no less than 24 hours in advance of such intended treatment; provided, however, that these locations are registered and identified as required by Section 909.02 of the Revised Code of Ohio, and that such apiary locations have been posted with the name and telephone number of the owner or caretaker."
"Since ULV and thermal fog applications are not residual type applications to crops, notification of beekeepers prior to the application is not required. Many mosquito control agencies, however, will notify beekeepers in the area and publish their adulticiding schedule regardless."
"Applications of pesticides which are hazardous to honey bees shall be made at times when pollinating insects are not actively working in the target area; however, application of calyx sprays on fruits and other similar application may be made."
The Ohio law also states that records of all pesticide applications are required to be maintained for a period of three years from the date of the pesticide application. In addition, applicators and operators must be licensed through the Ohio Department of Agriculture to apply pesticides.