At my house we have a crazy ant problem and being in a wooden house, I am a little paranoid about ants! I found great way to get rid of them and it works super fast too.
You will need
5 Tbsp of baking soda
5 Tbsp of icing sugar (do not use normal sugar, the grains are too big)
3 Tbsp of water
Take the icing sugar and mix it with an equal amount of baking soda and water.
Then place small amounts against the walls or other areas where you would not normally walk but where you would normally see the ants.
The ants will be attracted to the sugar and will eat some of it and collect more to take home to feed others, so all of them will get their share.
The icing sugar and baking soda grains are similar in size and, once mixed together, the ants cannot separate the two items, so, as they eat the sugar, they will also ingest the baking soda, which they would otherwise never touch.
Once the ants eat the baking soda it will react with the formic acid in their stomachs and cause gas. The bodies of ants are unlike humans and they cannot eliminate gas so it will build up inside and eliminate them.