If you currently have a fire ant infestation and want to know if you can deal with it using baking powder, you are in the right place.
This article will teach you everything you need to understand about correctly killing these pests with baking soda.
Baking soda for killing ants is one of the easiest ways to get the job done, and yes it’s often effective but requires several applications. The best part is most households have this go-to product, and it’s affordable.
So, let us begin so we can answer all the questions you have!

How Can Baking Soda Kill Ants
There is a very sound explanation for this question if you remember what you learned in your high school science class.
When you combine a base compound like baking soda in a bowl with an acidic one like vinegar, bubbles start to form. This formation results from a chemical reaction that emits carbon dioxide into the air.
If a fire ant consumes the baking soda mixed with powdered sugar, the same reaction occurs within their stomachs, and they pass away.
Some so-called pest experts on YouTube believe an ant’s body explodes at this point, but it’s not the case. Instead, the baking soda leaves their bodies dry and without moisture, causing them to die the way a slug does when you sprinkle salt on it. Using Salt is also an excellent option for baking soda alternatives for eliminating fire ants, which we discuss in another article.
Most of the fire ants you spot traveling around your backyard are worker ants, and their sole job is to find food. The food is used to feed themselves and to bring the rest back to their ant colonies nearby so all the others can eat.
Once you put the baking soda mixture in areas with the most insect traffic, the worker ants bring it back to their colony without realizing it, and everyone inside dies after eating a piece. If you’re lucky, the queen will be inside and consume a portion of the poison, and once she dies, your infestation problems will be behind you.
Is It Effective?
Making a paste with baking soda and powdered sugar to kill ants is effective. The goal is to make enough for them to eat and still have more to take to the nest. Most times, going through the process once will solve your problem.
If you still have ants alive and well, there’s a possibility you didn’t make a sufficient amount of the mixture to kill them all. Another possibility as to why the ants are still around is that there are other nests you didn’t spot.
The simple solution is to keep making more of the baking soda mix and target the places where you see these insects the most.
To handle a substantial ant colony, find a bean can and fill it with the mixture until you can’t put in more. If you have dogs or cats, keep them away from the area you plant the cans in for their protection.
The large percentage of confectioners’ sugar will tempt them to stop playing it safe and come out of hiding.
If, after one week, the baking soda mixture is not getting rid of your problem, you won’t have a choice but to use a more potent commercial product like traps and baits with boric acid for ants.
It isn’t an all-natural solution, but if you’re serious about dealing with your pest problem, you must use them. Some pest control products are child-friendly, so buy those if you have anyone under eight years old at home.

How to Use Baking Soda To Kill Ants
Below are the steps you can take to use baking soda to kill ants properly:
- Combine 4 ounces of baking soda with 4 ounces of sugar in a coffee cup. If you want to double the amount to attract ants, you can, but it hinges on how bad your ant infestation is at this point. For most situations, a full cup of this mixture is enough to eliminate most ant colonies.
- Locate the areas getting the most ants crawling around. For example, if the traffic is coming from a crack in the wall, cover it up entirely with the baking soda solution in the vicinity surrounding the gap. In situations where the ants are coming from the kitchen cupboard, but you can’t figure out how they are getting in, leave the mixture in a bowl and put one bowl in all the cabinets you have.
Extra Tips
- After you are sure every ant has been dealt with, you can use the plaster of Paris to cover the cracks they were using to get in your home. If you don’t have plaster, block it with anything you think will work. Also, remember you might have to continue repeating the two steps above to ensure baking soda kills ants in your home properly.
- To save money, store whatever is left of the baking soda mixture in a plastic container when you have more pests. It may seem common sense but add a label to the container if other people are living with you so there’s no confusion.
- Lastly, sprinkle baking soda mix directly on the ant’s lair if you already know where the nest is. Every entryway must be covered with at least a full tablespoon of the mixture for this solution to be effective.
Note: If this doesn’t work, see our guide on How To Get Rid of Fire Ants: Tried-And-True Methods.
Conclusion On How Baking Soda Kills Ants
Baking soda is used in your home for multiple purposes, making it a precious household item.
And after perusing through this guide, you know it’s a fire ant’s worst nightmare when mixed with the right ingredients and is affordable for all budgets. But the best part is that it’s non-toxic so breathing it in or keeping it near your loved ones is not risky.
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