http://www.sciencedaily.com/releases/2015/08/150831001137.htm
Ants to the rescue: How super-organisms could become super pest controllers
As global population rises and finite resources dwindle, farmers need new, more
sustainable ways to control pests. Now, ecologists have found a safe, sustainable and cost-effective new pest control. But rather than a high-tech compound or genetic technology, it's a tiny, low-tech organism: the ant.
Published today in the British Ecological Society's Journal of Applied Ecology, a review of more than 70 scientific studies provides evidence that on many crops from cocoa and citrus to palm oil and cedar, ants can control pests as efficiently -- and more cheaply than -- chemicals.