Thanks for that and will do! Really appreciate it.USDA or FDA would be the ones who gives you any trouble, not the EPA. Just put a sheet in the box with the antibiotic name and amount, or post it on your website... ala how API says 200mg of erythro, among the many others.
For example, Tylosin at 100 mg per scoop or 4g per container, or whatever.
You have probably gotten lucky that Boyd has been such jerks about this for a few decades that most of the ire has been on them