I wouldn't use poison outside because you can potentially kill other "good" insects and possibly birds. For outside, they have to have a mound somewhere, find the mound and pour BOILING water on the mound. This will kill them.
Inside, use some of the safer suggestions that were offered such as vinegar and water, bay leaves, or even hair spray will work. Cats don't like that because it sticks to the floor.
Inside, use some of the safer suggestions that were offered such as vinegar and water, bay leaves, or even hair spray will work. Cats don't like that because it sticks to the floor.