Hello! We are in our first year of beekeeping, and we have 24 hives. I just recently found out that a beekeeper about 1/2 mile away from 16 of our hives us has some hives with american foulbrood. I'm not opposed to treating with a chemical when necessary, but I just want to know that theres no other option. So my question is, should I treat them with some terrmycin that I have as a precaution, even though they don't have it. Or is there some other way to help prevent this without the use of chemicals? Thanks for your help!