Not organic but the basic ingredient is a pyrethroid -
Bengal (dust) Fire Ant Killer works and one cannister can treat up to 75 mounds. Use only 1/2 to 1 teaspoon per mound. Go back in a few days to treat any satellite mounds that appear.
Here is a link to explain side effects/toxicity of the main ingredient Deltamethrin.
http://npic.orst.edu/factsheet...
If you can treat the mound and place something like a carton or milk crate over the treated area it might prevent animals including birds from being exposed.
