I am also a Master Gardener and I prefer to stay with what works for me. Everyone has their own "solution" in controlling fire ants, though no one (anywhere)has been successful eradicating them. I have yet to see a resistance to Orthene.
drdawg (Dr. Kenneth Ramsey)
The reason it's so hard to lose weight when you get up in age is because your body and your fat have become good friends.