OK lots of us get ants. Well, having kept notice over the years, July 10 the Ants go back underground for 6 more weeks of building, stocking and moving sand before the last of August when it can get nippy for an ant at night. This is in Minn and I assume if your in the northern snow belt at about the same latitude. Sooner in Canada. Later in Missouri.
Amazing really. The little buggers were highly active the last 2 days and today guess what, hardly any. Like clockwork nature is. Thank goodness.
Keep track where you are. They will leave the same day next year. Good to know cause there kind of a pain if ya have pets and stuff.