Apr 21, 2014 - 03:42 PM
If you don't know where the nest is, the you will have to resort to baiting because sprays are not going to work. Spraying will only kill the exposed workers, the remainder of the colony will thrive and likely multiply into new colonies resulting in more problems.
The KM Ant Pro System is by far the best overall system to control carpenter ants, indoors or outdoors. Its easy to use, controls existing ants, and keeps future invading ants away.
Here is a link to the KM Ant Pro info page - http://www.epestsupply.com/km-ant-pro...