May 07, 2015 - 04:05 PM
I can assure you that the manufacturer of the KM Ant Pro dispenser - Ken Kupfer, would disagree that 1% is too toxic for argentine ants. You may want to contact Ken at email@example.com for further clarification. Ken has made many visits to CA and has given numerous presentations to researchers such as yourself on this very subject. He is the most knowledgable person that I know of pertaining to ant control.
The problem with using a liquid ant bait is not necessarily with the bait itself. It is with the delivery system. This is where the Patented KM Ant Pro System shines. It is the most effective liquid ant bait delivery device ever invented - especially for argentine ants.
I don't have contacts in the San Diego area. Sorry. Let me know if I can help you with anything else.