This link will connect you with a researcher who believes you should rotate cocci meds-
I found it most ennlightening!
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex4616
I found it most ennlightening!
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/agdex4616