Quote:
Originally Posted by yvanleterrible
I might be venturing out of competence here but I think it has to do with the size of the chalk particles. To climb vertical surfaces insects rely on fine cilia distributed on their limb tips. Chalk particles could accumulate between cilia and prevent adhesion to surfaces for a good safe climb. Ants are notoriously clean creatures and must notice the disruptions so they'll avoid chalk when they get to it.
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That may work for clean, polite Canadian ants, but down here, the fire ants actually dig the mortar from around bricks. It's war, and the blasted fire ants are winning!
Amdro will kill part of a nest, but the survivors hatch a batch
of queens and males, and they swarm up in the air. Those survivors will have made 5 more giant piles inside of 2 weeks!