Does baking soda kill ants? Honestly, not reliably. The popular claim that baking soda mixed with sugar makes ants “explode” by reacting with their stomach acid is a myth with no real scientific support. Ants may die if they ingest a lot of almost anything, but baking soda is a weak, inconsistent ant killer — and it does nothing to the colony that’s the actual problem.
Key Takeaways
- The “exploding ants” claim is a myth — there’s no good evidence baking soda reliably kills ants.
- It doesn’t touch the colony — even if a few foragers die, the queen keeps producing more.
- Slow-acting bait is what works — workers carry it back and poison the whole nest.
- Save baking soda for cleaning — it’s a fine deodorizer, not a pest control product.
The baking soda myth, explained
The internet is full of a tidy-sounding hack: mix equal parts baking soda and powdered sugar, the ants eat it, and the baking soda reacts with the acid in their bodies and kills them from the inside. It’s repeated everywhere, but it doesn’t hold up.
The reasoning is shaky on two counts. First, ants aren’t drawn to baking soda — the sugar is the only attractant in the mix, so they tend to eat around it. Second, there’s no credible research showing baking soda reliably kills ants through an acid reaction. Insects don’t “explode” from a bit of sodium bicarbonate. At best it’s an inconsistent stomach irritant; at worst the ants ignore it entirely.
The bigger problem: it ignores the colony
Even if a home remedy kills a handful of the ants you see, it misses the point of ant control. The visible foragers are a tiny fraction of the colony. The egg-laying queen and the bulk of the nest never come to your counter, so killing surface ants — by any method — doesn’t stop the supply. This is exactly why the proven approach uses slow-acting bait that workers survive long enough to carry home and share (University of California IPM: Ants).
What to use instead
If you want the ants actually gone:
- Use slow-acting ant bait placed on the trail, and let workers carry it back to the nest.
- Cut off food and water — sealed food, clean counters, no standing moisture.
- Wipe scent trails with soapy water or vinegar so followers lose the path.
- Seal entry points to keep new scouts out.
The full method is in our guide to getting rid of ants.
Are any home remedies worth it?
A few have a real (if modest) basis: vinegar genuinely erases the pheromone trails ants follow, and diatomaceous earth kills slowly by drying ants out as they cross it. These can support a bait-based plan. Baking soda just isn’t one of them — keep it for the fridge.
Frequently Asked Questions
Does baking soda actually kill ants?
Not reliably. The claim that it reacts with ants’ stomach acid and kills them is a myth without scientific support. Ants also aren’t attracted to baking soda itself, so most of it gets ignored. It’s not an effective ant treatment.
Why does the baking soda and sugar trick not work?
Because the sugar is the only part ants are after, and there’s no evidence the baking soda kills them through an acid reaction. Even when a few foragers die, the colony and queen are untouched, so the ants keep coming.
What actually kills ants for good?
Slow-acting bait carried back to the colony, combined with removing food and water, erasing scent trails, and sealing entry points. That’s what eliminates the nest rather than just the ants you can see.
Is vinegar better than baking soda for ants?
For ant control, yes — vinegar removes the scent trails ants follow, which baking soda doesn’t do. Neither one eliminates a colony on its own, but vinegar at least supports a proper bait-based plan.