Oct 13, 2015 - 01:45 PM
The only other possibility is to use Advance Carpenter Ant Bait, and it will work too. It has to be applied every 3-4 days and the bait supply maintained this way until the Carpenter Ants are dead. How long this takes, is a good guess. Usually 3-4 weeks in most cases.
Liquid sprays will not work for Carpenter Ants outdoors.
Hope this helps.