Hi Jerry. I am the originator of the mineral oil research project. I started using mineral oil looking for an alternative to A. strips (because I thought that the mites would eventually develop resistance to flavulinate, the active ingredient in A. strips; and it has already done so!) Mineral oil is effective as corroborated by the testimony of others who are using it. You might find info about the use of mineral oil in the Bee-L archives. Just in case I am attaching my files (previously posted on bee-L for your benefit. Please let me know if you get them okay. FGMO, means food grade mineral oil. It means that it has been approved by the federal government for use in food handling operations. Best regards. Dr. Rodriguez Virginia Beach, VA