How To Get Rid of Ants in Mulch Beds

Ants can become a nuisance in your garden when they make their home in your mulch beds. However, here is how to get rid of ants in mulch beds to effectively prevent them from coming back.

In this well-detailed guide, we will explore many techniques and natural remedies that will help you get rid of ants and keep your mulch beds ant-free. Let’s dive in and discover how to reclaim your garden from these tiny invaders!


Why Are Ants Attracted to Mulch?

How To Get Rid Of Ants In Mulch Beds
Picture of a mulch bed

Before we look into the different methods of getting rid of ants in mulch beds, let’s understand why ants are attracted to mulch in the first place. Mulch are attracted to mulch because mulch provides a perfect environment for ants to nest and thrive. It provides shelter, moisture, and food sources, making it an ideal place for ants to colonize.

The moist and sheltered conditions created by mulch attract ants because they always look for these comfortable environments to build their nests. Smaller insects living within the mulch and topsoil serve as a food source for ants, further attracting them to mulch beds. Also, the warmth provided by mulch during colder temperatures makes it an inviting spot for ants to nest.


How To Get Rid of Ants in Mulch Beds

1. Pour Boiling Water

One of the simplest and most effective ways to get rid of ants in mulch beds is by pouring boiling water directly onto the ant nests. This method works best for shallow ant nests. Boiling water kills the ants on contact, including the queen, thereby eliminating the entire colony.

To apply this method, boil a kettle of water and carefully pour it over the ant nests in your mulch beds. you should find the nests beforehand to ensure that the boiling water reaches the ants’ hiding spots. Repeat this process as needed until all the ants are eradicated.


2. Use Beneficial Nematodes

Beneficial nematodes are microscopic worms that can be used to control ant populations in mulch beds. These nematodes attack and kill ants by entering their bodies and releasing bacteria, which kills ants.

To use beneficial nematodes, buy them from an organic chemical shop and mix them with water according to the instructions on the packaging. Then, apply the nematode solution to the mulch beds, specifically targeting the areas where ants are present. The nematodes will remove the ants and help reduce the ant population over time.


3. Spread Diatomaceous Earth

Diatomaceous Earth (DE) is a natural and non-toxic substance that can be used to kill ants in mulch beds. DE is made from fossilized remains of marine phytoplankton and it works by dehydrating ants and other pests.

To use DE, sprinkle a layer of the powder onto the mulch beds, especially in areas where ants are most active. As ants come in contact with the DE, the powder will absorb the waxy layer on their exoskeleton, causing them to dehydrate and die. Remember to choose food-grade DE to ensure the safety of pets and children in case they come in contact with it. 


Read also: How To Get Rid Of Yellow Fungus In Mulch


4. Use Peanut Butter Poison

Another effective method for getting rid of ants in mulch beds is by using peanut butter poison bait. This method works particularly well for ants that are attracted to protein, sugar, and oil.

To create the bait, mix a tablespoon of sugar with a spoonful of peanut butter and add a small amount of borax. Borax is toxic to ants and will effectively kill them. Place small amounts of the bait near the ant nests or along their trails. The ants will be attracted to the sweet smell of the bait and consume it, which will get rid of them.


5. Try Boric Acid

Boric acid is another potent insecticide that can effectively get rid of ants in mulch beds. It works by dissolving the ants’ outer shell and gut, eventually killing them.

To use boric acid, create a solution by mixing ½ teaspoon of boric acid with eight teaspoons of sugar and a cup of warm water. Stir the mixture until the boric acid and sugar are fully dissolved. Soak cotton balls in the solution and place them strategically around the mulch beds where ants are present. The ants will be attracted to the sweet mixture and will eat it.


6. Opt for Commercial Pesticides

If natural remedies fail to eliminate ants in mulch beds, commercial pesticides can be used as a last resort.  choose a pesticide specifically designed to target ants. Look for products that contain bifenthrin, carbaryl, or pyrethroid, these are effective against ants.

When using pesticides, Always ensure to follow the instructions provided by the manufacturer. Apply the pesticide around the perimeter of the mulch beds, avoiding direct contact with the mulch itself. Use the insecticide sparingly to protect beneficial insects and pets from being harmed by the insecticide. 


7. Use Commercial Ant Bait

Commercial ant baits are an easy-to-use option for controlling ants in mulch beds. These baits contain attractive food sources combined with insecticides that are toxic to ants. The worker ants will eat the bait and take it back to the colony, eventually helping to get rid of the entire ant population.

Place the ant bait close to ant trails or directly on the mulch beds. The ants will be lured to the bait and will carry it back to the colony, where it will be shared with other ants, including the queen. Over time, the bait will completely eradicate the ant population in the mulch beds.


8. Barrier Sprays

Barrier sprays can be used to create a barrier around the mulch beds, preventing ants from crossing over into the area. These sprays are usually plant-based insecticides that repel ants and other pests.

To use a barrier spray, follow the instructions provided by the manufacturer. Apply the spray around the perimeter of the mulch beds, focusing on areas where ants are most active. The spray will create a repellent barrier that ants will avoid, keeping them away from your mulch beds.


Read also: How to Get Rid of Termites in Mulch


Natural Methods of Repelling Ants

Several natural remedies can help repel ants and prevent their infestation like:


1. Use Orange Peels

Ants dislike the smell of citrus fruits like oranges, lemons, and grapes. To repel ants from your mulch beds, boil peels from five or six oranges until they become soft. Then, blend the boiled peels with water in a food processor to create a citrus mixture. Spray this mixture on the mulch beds to keep ants from staying in your mulch bed.


2. Introduce Bug-Repellent Plants

Certain plants with natural insect-repellent properties can help keep ants away from your mulch beds. Consider planting lavender, mint, thyme, evening primrose, marigold, rosemary, catnip, or tansy in your garden. These plants have scents that repel ants and other pests, creating a natural barrier around your mulch beds.


3. Use Peppermint

Peppermint is another natural ant repellent that can be used to keep ants away from mulch beds. In a spray bottle, mix two cups of water and ten to twenty drops of peppermint oil. Spray this mixture around the mulch beds to create a peppermint barrier that ants will avoid.

Alternatively, you can soak cotton balls in peppermint oil and place them near ant nests or along ant trails. The strong scent of peppermint will stop ants from entering the mulch beds.


Neem Oil

Neem oil is a natural insecticide that can be effective in repelling ants from mulch beds. Mix neem oil with water according to the instructions on the packaging, then spray the mixture onto the mulch beds. Neem oil disrupts the feeding and reproductive hormones of ants, making the area less attractive for them to nest.



Vinegar is a versatile household item that can also repel ants. Mix equal parts vinegar and water in a spray bottle and spray the solution directly onto ants or their trails. The strong smell of vinegar will disrupt the ants’ trail and stop them from entering the mulch beds.


Which Ant Species Can Invade My Mulch?

Several ant species are commonly found in mulch beds. Here are some common ant species that may invade your mulch beds:

1. Rover Ants

How To Get Rid Of Ants In Mulch Beds
Rover Ant

Rover ants are small ants that measure less than 1/8 of an inch in size. They are attracted to sweet substances and are relatively easy to get rid of if you use sweetened bait traps.


Fire Ants

How To Get Rid Of Ants In Mulch Beds
Fire Ant

The stinging stings and aggressive behavior of fire ants are well-known. They typically nest outdoors and can quickly infest mulch beds. Fire ants can be challenging to eliminate and may require professional assistance.


Carpenter Ants

How To Get Rid Of Ants In Mulch Beds
Carpenter Ant

Carpenter ants are attracted to decaying wood and can become a nuisance in mulch beds. They do not feed on wood but excavate galleries within it, causing damage over time. Carpenter ants can be difficult to eliminate, especially if they have established large colonies.


Odorous House Ants

How To Get Rid Of Ants In Mulch Beds
Odorous Ant

Small ants that release an offensive odor when crushed are known as odorous house ants. They typically nest outdoors under mulch, logs, stones, or debris. These ants are attracted to moisture and are commonly found in mulch beds near water sources.


Read also: Bed Bugs vs Dust Mites Bites: Treatment & Prevention



Getting rid of ants in mulch beds can be a challenging task, but with the right techniques and remedies, it is possible to reclaim your garden from these invaders.

From using boiling water and beneficial nematodes to spreading diatomaceous earth and employing natural repellents, there are various methods available to eliminate ants and prevent their return.

Don’t forget to use methods that best fit your requirements and tastes. It is always good to prioritize safety when using any form of pesticide or insecticide.

If the infestation persists or becomes overwhelming, consider seeking professional assistance from a pest control agency. With persistence and the right approach, you can keep your mulch beds ant-free and enjoy a thriving garden or lawn.

About The Author

Discover more from Pestclue

Subscribe to get the latest posts to your email.

Leave a feedback

This site uses Akismet to reduce spam. Learn how your comment data is processed.