We would recommend our most popular carpenter ant control product which is our Carpenter Ant Kit . The Carpenter Ant Kit #2 with Dominion 2L provides the best carpenter ant control available. For serious carpenter ant problems, nothing does the job better adding a product such as Dominion 2L to your arsenal. Dominion is a sprayable liquid bait that makes up to 48 gallons of solution (enough to provide several years of outdoor protection) and can be sprayed around the outside of your home to provide a long-lasting barrier against carpenter ants and other ant species. Ants pick up the Dominion 2L on their bodies and spread it to other ants, eventually eliminating the entire colony. This kit also includes Advance carpenter ant bait for outdoor control/indoor control and Maxforce carpenter ant bait gel for indoor control. The Advance Carpenter Ant Bait is great for sprinkling in a 2 foot barrier around the outside of your home to provide a food source that outside ants are looking for. It can also be applied around wood piles, trees, stumps, or other areas of harborage. Advance Carpenter ant bait can also be used indoors in bait plate stations. The Maxforce Carpenter ant bait is for indoor control only and should be placed where you see ant activity inside. The ants will eat the bait and take it back to the nest spreading it around to the other colony members. You will need apressurized garden pump sprayer to apply the Dominion 2L.
Our Indoor Carpenter Ant Kit has commercial grade products in it. So it would definitely be a step above anything you could purchase in a big box store or most likely locally. This kit give you everything needed to combat a carpenter ant infestation. We have a great Carpenter Ant Treatment Guide here with additional tips.
Since you can't use a spray directly in any part of the chimney, we would recommend using our Indoor Carpenter Ant Control Kit. It comes with baits that you can put in bait stations to elminate the ants with a poisonous food source that meets both of their colonies nutritional needs. Then it also comes with Phantom aerosol than can be used in areas in the home where you see the ants and in crevices that you cant or dont want to bait in as the phantom acts as a transfer like the baits.
The Indoor Carpenter Ant Kit is safe for cats after the treated area has dried (1-2 hours). The bait should be applied to areas inaccessible to pets.
The Indoor Carpenter Ant Kit is safe for pets if used as directed. Pets should not be in the area during treatment until crevices are completely dry prior to their return to the areas. Please keep store products out of their reach and bait in areas that are inaccessible to pets.