06-12-2015, 05:08 PM
Amdro does work as long as it doesn't get wet. Placing it under pieces of tin roof, boards, etc is a good idea. At the seminar/workshop, Ant Lab guys said even if kept dry, because the granules are exposed to the moisture in the air, the picky critters can stop feeding on it after 4 hours. Also, we were told that they have a "learning memory" of what is killing the queens, so its better to wait at least 6 weeks before making a new application of granules. I highly recommend the "management clinic" if you can spare a half day.
http://www.littlefireants.com/AMC.html
http://www.littlefireants.com/AMC.html