Years ago I knew of a product that was a very sticky paste that you used to circle the trunk of a tree with. This kept ants from going up the tree trunk. I am now building a large box out on a farm to place week-old game birds in prior to releasing them when big enough. I am afraid that fire ants will travel up the legs of the box and get into the baby birds. I would like to find this paste so that I can put it around the box legs and keep the ants from getting into the bird box. Do you know where I can find that commercial paste?
Please check the web for some of the newer products that help kill fire ants.
Hopefully this article will be of some help: