Ants hate chalk.  We discovered this as children and would make a spiral around an ant on the sidewalk.  They wouldn’t cross the chalk line and  would spiral their way out. I have heard that the calcium carbonate desiccates them or that that the sharp particles injure them, but I have no idea of what the actual reason is that they avoid it.

Mary Ann St. Antoine

Waste Management and Radiological Protection Division

Department of Environmental Quality

Upper Peninsula District Office

From: hhwroundtable@kalcountyeh.simplelists.com [mailto:hhwroundtable@kalcountyeh.simplelists.com] On Behalf Of Jon Tulman
Sent: Thursday, June 01, 2017 12:19 PM
To: hhwroundtable@kalcountyeh.simplelists.com; Angela Porta
Subject: Interesting item

New item for our program! 

Brought to us by the daughter-in-law of a man who spent most of his adulthood doing missionary work in Africa.

Jon Tulman

Solid Waste Specialist

Washtenaw County, MI

734-222-3810

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