We have red ants here and they bite!
We have pest control spray an organic spray. Sometimes they still come into the house. As I have small children and a dog, I don't want to use pesticides inside, so I use window cleaner with ammonia. It kills them and then I spray liberally around the outside area. Then I call the pest control company.
Down here you need to have pest control for termites and red ants! I wish I could find something for mosquitoes!