A friend of mine has a source of horse manure and bedding but he's worried
that the worming medication given to the horses will show up in his compost.
I'm reasonably certain tests have been done on finished compost and worm
medications, antibiotics, etc. seem to be broken down in the composting
process but I can't find my source material. Can anyone give me a
reassurance I can pass on to him?
Thanks,
Marcie