My backyard has become a lush grassland and haven for various pests. I take full responsibility for the unkept appearance. Recently, I decided to embark on a scorched earth campaign. There was a large bush which was covered with with carpenter ants which were harvesting honeydew from large aphid colony.
After removing the food source, I noticed the ants seemed to disappear. Luckily, the tree is about 30 yards from the house, but I did not want to take any chances. I purchased some AMDRO pellets, and sprinkle around the garage area. Much time was spent reading various articles on carpenter ants and their various species.
Generally, pellets are not viewed as the preferred method for ridding yourself of these pests. The container stated that it would take roughly one month for the chemical to take effect. To my surprise, I noticed an immediate impact. Within 96 hrs, I began to see what appeared to be drunken carpenter ants. Apparently, the worker drones had carried the pellets into the nest and poisoned several workers. There was even an appearance of 'winged' drones, which I had not seen previously. Lots of buzzing inside of my garage. Perhaps the most important discovery was that the ants had created an elaborate channeled tunnels in the baseboard of the garage. The rotting wood is a by-product of a leaking garage roof. I am thoroughly impressed with the results.
Being the expert in yard work (since I have so much of it) the best thing to do is go to Home Depot or Lowes and get a sack of "Over and Out".
http://www.pestproducts.com/over_n_out.htm
It'll take care of the ant problems.
Thx for suggestion. I have been very pleased with Amdro, it began to kill these pests in roughly 72-96 hrs.