Its just a wild guess. But, being that it is a nature park. I don't think they would be poisoning the ants to move them from the path. That is their habitat. Its good that the children learn about everything in nature, what's good and what could be harmful.
There today with many schoolchildren
I have not seen any. I walked the Osprey trail, Fox trail and Otter trail on 4/27/2018
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