New York State IPM Program

August 24, 2015
by Matt Frye
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Carpenter Ant Satellite Nest – Elimination!

Of the ant species that invade homes, carpenter ants cause considerable distress due to their large size. This is particularly true in the spring and early summer, when foraging ants may be found in many rooms within a home. While these foragers are not much more than a nuisance, it is the nearby ant nest that is alarming to homeowners. Especially since carpenter ants can damage wood.

Carpenter ants can be thought of as an indicator species, since they tend to nest in wood that is damaged by moisture. Their presence is suggestive of a roof leak, clogged gutters, poor drainage from the home, or other structural issues that result in water-damaged wood. When nests are found in homes, they are often satellite colonies of the larger nest that is located outdoors in rotting wood such as a tree stump. It should be noted that carpenter ants do not eat wood as food (like termites), but rather use the structure for nesting purposes.

As an urban entomologist, my home is a laboratory of pest management trial and error. This spring and summer I observed carpenter ants in one corner of my garage. On the workbench below, I would occasionally see a dead ant or some frass (the excavated wood and food-stuffs kicked out of the nest). It wasn’t long before common house spiders (Parasteatoda tepidariorum) discovered the ants and started to feed on them, adding to the carnage on my work bench.

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House spider dining on a carpenter ant, with egg-sacs and newly-hatched spiders.

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What’s left after a spider feeds on many ants.

As summer progressed, I decided the experiment was over and wanted to rid myself of what I believed to be a satellite ant colony. I inspected the area around the ant sightings, and in the very corner of the garage, in a recessed void, I found what I was looking for – a large pile of frass and many ants. With my vacuum in hand (the same one I’ve used for eliminating yellowjackets), I vacuumed up as many ants as possible, plugged the end and left the vacuum in the heat of the sun for two days. Problem solved! Now I just need to find the parent colony.

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The spiders showed me exactly where the nest would be – the void in an upper corner of the workshop.

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Carpenter ant frass includes sawdust and pieces of insects.

Learn more in our carpenter ant factsheet!

June 23, 2015
by Joellen Lampman
Comments Off on Don’t Let Carpenter Ants Renovate Your Home!

Don’t Let Carpenter Ants Renovate Your Home!

Carpenter ants are the most common ant pest found in the Northeastern United States. They cause structural damage when they excavate wood for nest sites. Unlike termites, carpenter ants do not eat wood, but rather scavenge on dead insects and collect sugary secretions (“honeydew”) produced by other insects such as aphids. Carpenter ants are a nuisance pest when workers are spotted inside foraging for food and when winged swarmers are found inside.

Carpenter Ant Damage

Carpenter Ant Damage

Did You Know … ?

  • Wood is Not-So-Tasty: Carpenter ants tunnel through moisture-damaged wood and spit out wood shavings. The resulting waste piles look like sawdust and often include ant body parts.
  • A Numbers Game: There are approximately 24 species of carpenter ants that are pests in North America; nine of these species are present in the northeast.
  • Hanging Out: Carpenter ant larvae are clumped together by J-shaped hairs, and cling like Velcro to the roof of their galleries.

See Don’t Let Carpenter Ants Renovate Your Home! for more information on carpenter ants and how to manage them.

October 22, 2013
by Karen English
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Don’t Let Carpenter Ants Renovate Your Home!

Carpenter ants are the most common ant pest found in the Northeastern United States.

Black Carpenter Ant

Black Carpenter Ant

They cause structural damage when they excavate wood for nest sites.

Carpenter Ant Damage

Carpenter Ant Damage

Unlike termites, carpenter ants do not eat wood, but rather scavenge on dead insects and collect sugary secretions (“honeydew”) produced by other insects such as aphids. Carpenter ants are a nuisance pest when workers are spotted inside foraging for food and when winged swarmers are found inside.

Find out how to stop them here:  http://tinyurl.com/p42qlqg

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