diatomaceous earth will disperse ant colony from my experience. It only works when it is dry. If the soil is damp or if it gets rained on it seems to loose effectiveness. It won't hurt your birds or other pets...that's for sure. When I put it on an ant mound -- it does seem that the ants will disappear, but that they or other ant mounds appear elsewhere. I think that there is a large underground network of ant colony and that each mound is only one door way.
http://solutionsforyourlife.ufl.edu/hot_topics/sustainable_living/fire_ant_management.shtml
http://www.weekendgardener.net/organic-pesticide/diatomaceous-010801.htm
http://www.saferbrand.com/safer-bra...ug-flea-ant-crawling-insect-killer-4-lb-51703
http://lifehacker.com/5835163/kill-bugs-with-diatomaceous-earth
http://solutionsforyourlife.ufl.edu/hot_topics/sustainable_living/fire_ant_management.shtml
http://www.weekendgardener.net/organic-pesticide/diatomaceous-010801.htm
http://www.saferbrand.com/safer-bra...ug-flea-ant-crawling-insect-killer-4-lb-51703
http://lifehacker.com/5835163/kill-bugs-with-diatomaceous-earth
