Some where I saw a thread about ants, How can I keep ants out of my Kitchen and House? Was that on this forum? That was several years ago?
Ants are looking for food. If you see them in the house look very close to see which direction they are coming from. You can often trace them back to a place where they are coming in the house like cracks or under the kitchen sink where the floor has a hole from water pipe and drain pipe or a window or door or bathroom. When you know where ants are entering the house crawl under the house and put a 5 lb bag of white sugar there. You will never have another ant inside the house.
We had ants in the kitchen and bedroom. I traced the ants to the center supporting wall in the kitchen behind the cabinets next to the refrigerator. Ants disappeared into a crack where the trim touches the floor. I put a 5 lb bag of sugar under the house at that location and we had no more ants in the kitchen.
We also had ants coming in through the garage door so I put a bag of sugar between the 2 drive in doors the ants stop there.
We still had ants in the bedroom and master bath. Ant were coming in through a crack between the trim and floor this is the same wall between the master bathroom and master bath. I put a 5 lb bag of sugar under the house at that location we had no more ants.
That was 8 years ago still no ants in the house. I crawled under the house yesterday the sugar bags are still there but no ants to be seen anywhere. Sugar bags seem to have about 2 lbs. less sugar but no ants. I wonder if ants had a sugar over dose and died? I don't know and don't care I am glad ants are gone.