Start with prevention. Place weather-stripping around windows and doors, and door sweeps on exterior doors to prevent ants gaining entry through small cracks and crevices.
Cut tree branches and overgrown vegetation away from the exterior of your house as ants love to forage in shaded areas around the foundation of the home.
Repair any openings in the foundation and exterior walls of your home.
Locating the Source
The goal is to find the ant colony. Often this can be done by watching the trailing ants and following them back to the colony. This may be under stones, wood, landscaping logs, water hose containers, etc. Many ants prefer to nest under large items where it’s protected and cool. Some ants may build mounds and these ants can often be easier to find. Once you find the mound, you’ve won.
Treating Ants Outside
Once you have found the ants, use Scatter to treat the colony thoroughly and this will address the root of the problem. Easy as that! For good measures, it will also be wise to treat the trail of ants and all areas they have been seen to avoid a rebound or stragglers.
Treating Ants Inside
Treat entry points like doors and windows with scatter.
If you are finding some foragers, treat along baseboards or other junctions where the ants may be traveling. Avoid treating food prep surfaces with scatter.