Ants in the house are a symptom of another problem, they are not there because of heat. Which species can be an indication of why, ie. Carpenter Ants are in the house because of wet wood, but look deeper than the surface to determine why they are there, solve that problem and the ants will leave.

Wish my aunt would leave. ;)

bibbo, are you familiar with the very large carpenter ants? They are quite easy to identify, simply due to their size.

What is your general location? That bit of information might be helpful, too.

Ants certainly do come into a home for warmth, as well as water and food. There is at least one ant species that is famous for nesting around light switches, wall sockets, and the like, believe it or not! This ant, the Pharoah Ant, is often observed carrying the little larvae around, as they settle into new digs.

Ants will live inside wall cavities, in attics, along pipes, etc.

If you get back to us with your location and a bit of a description of the ant (size and color), that would be helpful. In the meantime, do not apply any chemical pesticides.

No I am not familar with Carpenter ants but these guys are small. I have heard them called "sugar" ants. They are tiny and brown. One is crawling on my computer as we speak.

I am located in the Bay Area, California. Oakland to be more specific.