I just realized you were talking about ants on your strawberries, not in your house. To reframe — I think diatomaceous earth is a good place to start, if it’s effective on crops. It will not harm plants or pets or people.
Otherwise, contact the entymology dept. at your local cooperative extension service is the way to go. Also, a horticulturalist specializing in fruit crops at your extension service may give you expert advice.