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How to get rid of carpenter Ants

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[OP]
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Sep 22, 2011
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How to get rid of carpenter Ants

Recently I found some Carpenter Ants in out en-suite bathroom, not sure how they've reached to the second floor and from where!
any recommendation?
19 replies
Sr. Member
Jan 22, 2012
531 posts
194 upvotes
Bradford
They love wet wood. Do you have any damp wood or leaks in the ensuite that may be causing moisture issues in the surrounding wood?
[OP]
Deal Addict
Sep 22, 2011
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Topher86 wrote: They love wet wood. Do you have any damp wood or leaks in the ensuite that may be causing moisture issues in the surrounding wood?
that's another concern, if they are there, I'm assuming there is a leak somewhere!, it may be a small leak as it's not visible from outside!
Deal Addict
Aug 1, 2006
1677 posts
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Toronto
Assuming you stop leak, if borders reopen and you ever get to USA, combatMax ant killing gel is supposed to be good, but not available here.
Amazon USA link
Deal Fanatic
Jan 25, 2007
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Paris
Terro ant baits. Cheapest at Home Depot but available at Lowes and Cdn Tire as well. Home Hardware can order them but YMMV if they have them in stock
Deal Guru
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Mar 8, 2002
12349 posts
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Jerico wrote: Terro ant baits.
+1

These worked amazingly well for carpenter ants. They came in under the patio door. When we lifted the carpet, they were everywhere. Next day put down 3 of these things and when I checked back two days later, no ants around, or ever since.
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Mar 22, 2017
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West GTA
Carpenter ants are a symptom of a wood issue - they don't live in healthy wood, they live in damp, decaying wood. If they're in your house it could just be scouting from elsewhere, but if they live in your house you might have an issue behind the walls.

Terro ant baits kill them. Don't do anything else to kill them, you want them all going to the bait, bringing it back, and killing the nest.
[OP]
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Sep 22, 2011
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grumble wrote: Carpenter ants are a symptom of a wood issue - they don't live in healthy wood, they live in damp, decaying wood. If they're in your house it could just be scouting from elsewhere, but if they live in your house you might have an issue behind the walls.

Terro ant baits kill them. Don't do anything else to kill them, you want them all going to the bait, bringing it back, and killing the nest.
I've put lots of Terro all around the house, but on and off I see them!
yesterday I saw 100s of them trying to get in or out of a brick hole, not sure what was happening, some of them were flying!
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Jan 25, 2007
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Paris
amiratish wrote: I've put lots of Terro all around the house, but on and off I see them!
yesterday I saw 100s of them trying to get in or out of a brick hole, not sure what was happening, some of them were flying!
I found with the Terro I could figure out where they were coming from and put the traps closer to the source.

Flying ones mean a nest is mature. Will happen outside. I used to get queens inside and that ain’t good
[OP]
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Sep 22, 2011
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Jerico wrote: I found with the Terro I could figure out where they were coming from and put the traps closer to the source.

Flying ones mean a nest is mature. Will happen outside. I used to get queens inside and that ain’t good
what should I do!
Deal Fanatic
Jan 25, 2007
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Paris
amiratish wrote: what should I do!
They are outside. Maybe a Terro bait near them outside.
[OP]
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Sep 22, 2011
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Jerico wrote: They are outside. Maybe a Terro bait near them outside.
Thanks, I will put some bait outside too, but as I said, I saw them in the basement as well as second floor!
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May 8, 2007
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Fraser Valley, BC
Jerico wrote: Terro ant baits. Cheapest at Home Depot but available at Lowes and Cdn Tire as well. Home Hardware can order them but YMMV if they have them in stock
Are the Terro ant baits better than the Wilson AntOut brand? Wilson has 5% borax. I’ve been using the Wilson ones and they seem to have greatly reduced a colony near my front door. But there are a lot more ants about 5m away along the crack between my sidewalk and garage, I put more baits there at same time and I can see I only slowed them down. These are “pavement ants”, smaller than other common ant types, probably can use same poisons.
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Jan 25, 2007
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Paris
adams7 wrote: Are the Terro ant baits better than the Wilson AntOut brand? Wilson has 5% borax. I’ve been using the Wilson ones and they seem to have greatly reduced a colony near my front door. But there are a lot more ants about 5m away along the crack between my sidewalk and garage, I put more baits there at same time and I can see I only slowed them down. These are “pavement ants”, smaller than other common ant types, probably can use same poisons.
I have used both at once and more ants preferred Terro than the other leading Brands.
Sr. Member
Jan 7, 2013
685 posts
343 upvotes
Oshawa, Ontario
Jerico wrote: I have used both at once and more ants preferred Terro than the other leading Brands.
I've had good results with the Terro Liquid Ant Traps
Newbie
Apr 5, 2019
41 posts
7 upvotes
Last week had ants problem. We used Wilson Ants out 1 litre, sprayed across the baseboards, moped the wood floor with mixed 1 cup of vinegar and pinesole cleaner. Did this for 2-3 times ants are gone.
Member
User avatar
Jul 12, 2013
229 posts
149 upvotes
Saint-Bruno-de-Monta…
First time house owner here... Can someone please help take a look are these holes done by ants or something else? I noticed a few weeks ago but thought it was just dirt and blew it away. Today I saw a lot more in those joints between bricks...
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Sr. Member
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Jun 24, 2005
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Richmond Hill
cokeboy wrote: First time house owner here... Can someone please help take a look are these holes done by ants or something else? I noticed a few weeks ago but thought it was just dirt and blew it away. Today I saw a lot more in those joints between bricks...
Looks like ants. I have this issue as well and see ants come out of the holes. I think they are making tunnels underneath, so they have to push out the dirt to the outside.
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Jul 12, 2013
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Saint-Bruno-de-Monta…
rngun wrote: Looks like ants. I have this issue as well and see ants come out of the holes. I think they are making tunnels underneath, so they have to push out the dirt to the outside.
Thanks!! I am going to try the Terro liquid ant baits as others have mentioned in this post.

Someone also said damp wood attract these ants... Is that something I should call for a specialist to inspect the house for potential leakage?
[OP]
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Sep 22, 2011
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cokeboy wrote: First time house owner here... Can someone please help take a look are these holes done by ants or something else? I noticed a few weeks ago but thought it was just dirt and blew it away. Today I saw a lot more in those joints between bricks...
these are ants job, I have those in my backyard

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