Using Eucalyptus to Get Rid of Black Ants

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Black ants can be a very persistent pest. Killing individual ants tends to be futile; once you have one ant, it seems that the remainder of the nest is close behind no matter what you do. It is possible to exterminate ants by fumigating, but there are many reasons to want to avoid doing this. Is there a more natural solution to an ant infestation? Luckily, the answer is yes.

Ants navigate by smell. They spread out, and the ones that find food report back to the main group, signaling by scent where they should go. Because of this, ants are vulnerable to certain strong smells. Eucalyptus oil, with its strong scent, will drive away ants by leaving them unable to find your food. The following should help you keep your home free of ants using eucalyptus oil.


  • eucalyptus oil
  • water
  • spray bottle

Step 1 - Getting Ready

Rather than trying to kill every single ant that is near your house, your goal is to prevent ants from getting inside. Because of this, you need to figure out where the ants are entering your house from before you do anything. Usually, ants will form lines, so if you find one ant, you can follow the line back to the entrance. Sometimes, however, this will not be the case. If there is no line of ants to follow, you will simply have to look carefully for their entrance.

Once you have found out how the ants get inside, fill your spray bottle with water and add 15 drops of eucalyptus oil.

Step 2 - Applying Oil

Spray the area that the ants are using to get inside thoroughly with your spray bottle. You want to cover the entire area in such a way that the ants can't get in or out without crossing the oil.

You should also spray other areas the ants are using. Figure out what food source attracted the ants, and spray the area around it. Also, you should spray any areas that are travelled heavily by the ants.

Step 3 - Preventing Future Problems

Spraying eucalyptus oil in this way should be enough to drive out any ants you have in your house, and keep the rest out. But preventing ant infestations in the first place is easier than eliminating one that already exists. Now that your home is free of ants, you should take some precautions to make sure that it stays that way.

First, you should give ants no reason to enter your home. This means keeping all things they could eat unavailable to them. Clean up all spills immediately, keep your food containers closed tightly, and keep your garbage firmly sealed. If there is nothing to serve as ant bait, the ants should stay away. Pay close attention to what attracted the ants in the first place, and make sure it doesn't happen again.

In addition, you should try to prevent ants from being able to get inside. Use caulk on all cracks and gaps, and use weather stripping on doors and windows. Be sure to deal with whatever tiny hole that your ant problem exploited.

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