Do Carpenter Ants Eat Wood?

will carpenter ants eat pressure treated wood

No, carpenter ants don’t eat wood.

The fact is, they NEVER consume the wood, no matter what variety of soft or hardwood you have in your home.

These small insects only chew through the timber to make holes, tunnels, or galleries where they can safely raise their young.

And they do so with the help of their strong jaws without consuming the wood material.

Pressure-treated wood is even more resistant to their attack because of the chemical agents they are being subjected to under strong pressure.

This means carpenter ants will tend to stay away from this kind of lumber that is treated with chemical preservatives and processes that make them less susceptible to decay, rotting, and insect infestation.

Having said that, these tiny pests are devasting for homeowners because the nests they make can get quite large if not controlled.

What are Carpenter Ants?

Carpenter ants are among the largest species of ants that are found in the United States.

They possess a typical 3 ant body segment and usually measure between 1/2″ to 5/8″ – sometimes as big as ¾ of an inch (or 20mm).

Not only by their big size but you can identify carpenter ants by their color which can range from all-black, all-brown to red-black or red-brown.

Carpenter ants got their name because of the unique way they damage the wood in your home.

Unlike termites, they do not consume the wood but will chew and excrete to make a pathway for their colleagues.

If you are noticing the piles of particles like wood shavings on your hardwood floors, wardrobes, kitchen cabinets, etc., most likely you are having carpenter ants in or around your home.

what does carpenter ants look like

Damages Caused by Carpenter Ants

Usually, carpenter ants start by chewing wood that has high moisture content.

If left unnoticed, they will then continue making voids into the nearby wood furniture, drywall, door trims, PVC windows, and various other structures.

Outdoors, they can chew through decaying wood, logs, firewood, stumps, trees, cedar siding, and much more without eating them.

Just like other woods, carpenter ants do not eat trees.

They will only make a tunnel that can go along to the heartwood and can even cause a tree’s death over time.

So, What Do They Actually Eat – If Not Wood?

Carpenter ants majorly feed on protein sources like small insects (alive or dead).

Sometimes they also feed on small invertebrates and insects like termites that are already present in the wood.

When inside a house, they are also attracted to honey, syrup, honeydew, sweet liquids, bacon grease, and other sugars, in addition to meats and pet food.

As soon as you suspect a carpenter ant infestation inside or outside your home, it’s good to take measures and call a pest management team who can control these insects before they cause a lot of damage to your property.

do carpenter ants eat dry wood

How to Identify & Treat Carpenter Ants Problem?

If taking a DIY route to get rid of carpenter ants, it all starts with identifying the insects and making sure that you are targeting the right problem.

While carpenter ants can burrow and colonize inside wooden structures, just like wood-eating termites, they are much different.

Ant vs TermiteCarpenter AntsTermites
BodyNarrow waist with three distinct body segmentsBroad waist with a long body and head
WingsFront wings are longer than back wingsHave wings with equal length
AntennaeUnique sharp-elbowed bent antennaeStraight or slightly curved antennae
Eating habitSweet foods and meatsCellulose from wood, paper, cardboard, cotton grass, leaves, hummus, etc.

Once you have identified the carpenter ants in your home, it’s time to fix the infestation.

Remember, getting rid of carpenter ants starts with finding their nests where they are actually located so that you can directly target their nests.

These nests can be either inside or outside your home and it’s not always easy to locate them.

The good way is to check if you have any source of moist, decaying wood because they are most likely to make their nest in these places.

Also, look for:

  • Frass – a finely ground wood debris like a sawdust
  • Damaged wood within walls, wooden doors, or window trims
  • Inside your kitchen cabinets where you place food items like jams or sweets

A few easy home remedies you can try for stopping and removing the carpenter ants, you have just located, are:

1- Boiling water

Boil a few liters of water in a stainless-steel container and then pour it directly into the ant nest.

If you want, you can add essential oils, dish soap, or a natural water-soluble insecticide to the boiled water to make it work even more effectively.

With this natural method, you can attack the ant colony directly.

But be sure, as this method can be dangerous you should try it only for ants nesting outdoors. Or if using indoors, exercise extreme caution.

You should continue to treat the problem areas (a few times a week) until you see the ants no longer return.

2- Diatomaceous Earth

Diatomaceous Earth is a popular pesticide that is all-natural.

It’s made from crushed algae fossils and typically acts as an abrasive material to damage the exoskeleton of ants as soon as they come in contact with it.

Just spread some DE near the ants’ nest or infested areas and you will see the ants getting killed soon.

The good thing about Diatomaceous earth is it’s deadly to insects but completely safe for animals and pets.

So, you need not worry about your dogs and cats if they come in contact with the substance.

3- Water and vinegar solution

White vinegar with water solution (mixed in a 1:1 ratio) is also an effective carpenter ant deterrent.

You can spray this all-natural disinfectant solution liberally with a spray bottle along the pheromone trails of ants.

The solution will disrupt them and will leave the smell which prevents the ants from coming again.

4- Essential oils like lemongrass and peppermint

Essential oils such as lemongrass, peppermint, clove, tea tree, orange, cinnamon, and cedarwood are all effective in disrupting pheromone trails and deterring ants.

Simply dampen a cotton ball with essential oil (of your choice) and wipe along windowsills, baseboards, door frames, countertops, drains, or other areas that serve as an entry point for ants.

Alternatively, you can dilute the EO in a carrier oil and with a sprayer use it as a natural ant-killing spray.

Repeat this process daily for about a week and you will see the ant population disappearing gradually.  

5- Natural carpenter ant bait that includes baking soda and sugar

Sugar and baking soda bait is a natural yet effective carpenter ant bait that can be used for stopping ants inside and outside.

This can be made simply by mixing equal parts baking soda and powdered sugar.

Place this mixture in shallow dishes near the ant nests or at locations where they are suspected to come.

The sugar present in the mixture attracts the ants while the baking soda kills them naturally.

Other than the above home remedies you can also consider spraying non-toxic insecticides to kill the ants nesting inside or outside your home.

Just make sure you treat all the trouble areas inside your home and along the fence lines, trees, and home’s foundation.

Final Thoughts

Carpenter ants in your home are tiny creatures that can become problems if present in huge numbers.

Although they do not consume wood, they can chew through it causing great damage to your furniture and home structures.

As soon as you notice their signs and feel their presence, the best is to treat the areas and prevent them from returning by keeping your space clean and tidy.

Do not forget to seal the cracks or holes with a caulk sealant and get rid of unnecessary moisture by fixing leaky plumbing, faucets, sprinklers, clogged drainage areas, etc.

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