>>60833951 (OP)
Terro is ant-food. It doesn't poison them at all. It's like the Zyklon-B of the insect world. The best way to manage ants is to be hygenic. Then they habitually go outside to find food instead of your dirty ass house.
1. Clean the fucking room
2. Look for where ants are entering.
3. Caulk the hole.
Repeat until ants go somewhere else for food and water.
Ants only build colonies where they can find water. If you have an issue in the middle of the house, you have a pipe leak that needs care before your problem will resolve.