Garden Pests and Diseases: What insect creates these nests?, 2 by tomcran

tomcran wrote:
Here are a couple of photos of nests which keep appearing by my garden. I spray them down with water, but they come right back. I suspect they are some sort of ant variety, but I never see ants or anything around them, even when I dig into a fresh one. I have infestations of a sort of very little black ant inside my house once in a while - are these the sort of nest small very small black ants make. What is making these nests and how do I destroy them? Thanks for any input!

This message was edited Jul 4, 2016 1:58 PM