I have been wanting to share this idea for a while now, but never seemed to think of it when I was ready to post on the blog. This idea is one that we have used with great success. I first tried it over 20 years ago and have found it to work better than anything else.
A couple of summers ago, we found a large fire ant nest in our front yard. Not fun! For those who have ever been bitten by these little buggers, you know how painful they can be. They are also hard to get rid of, from what I have often been told.
As soon as we found the nest, I gave my darling husband a container of yellow cornmeal. Yep! The same stuff you use for making cornbread. He scattered it over the nest area pretty well. The next day, the cornmeal was gone and the fire ant hill was completely absent of any activity. Even 2 years later, there has never been another sighting of the hill area becoming active again.
I have used this same trick in the house when I find an ant trail forming. Outdoors, where we had a large trail of the big carpenter ants, I also scattered cornmeal. With every type of ant I have used this on, the results have been the same.
How it works is easy. The ants carry the cornmeal back to the nest and they consume it. The cornmeal swells up in their bellies and kills them. I love that it is completely organic and safe around the cat and kids.