Does Baking Soda Kill Roaches?

If you’ve spotted roaches in your home and you’re looking for a quick fix, you’ve probably come across the baking soda and sugar trick. So does baking soda kill roaches? It actually can, but there’s a catch. Baking soda doesn’t work on contact or by simply being sprinkled around. Roaches have to eat it. Once eaten, the baking soda reacts with the acids and water in their stomachs, building up gas pressure that eventually kills them. The problem is that roaches find baking soda repulsive on its own, so you’ll need to mix it 50/50 with sugar to get them to take the bait. Place the mixture in corners and areas of high roach activity, and expect results within 12 to 24 hours of consumption.

As far as home remedies to kill roaches go, this one is genuinely one of the more legitimate options—it’s cheap, pet-friendly, and doesn’t involve harsh chemicals. But it comes with some real limitations. Leaving sugary bait out in the open can attract ants and other insects, making your pest problem worse rather than better. And if you’re dealing with a German cockroach infestation, a homemade roach killer like this simply won’t keep up with their breeding cycle. A single female German cockroach can produce up to 40 eggs per case, and with multiple females breeding at once, the numbers grow far faster than a baking soda trap can handle.

That’s the honest truth about any homemade cockroach killer—it might knock out a few stragglers, but it won’t touch the colony hiding inside your walls, under your appliances, or deep in your plumbing. Roaches don’t need much to survive, they breed fast, and they’re experts at staying out of sight until the infestation is already well established. DIY methods can help reduce activity at the margins, but they rarely solve the root problem.

If you’re still seeing roaches after a few days of trying, don’t wait it out. Florida Pest Control can identify the species, locate where they’re nesting, and apply targeted treatments that break the breeding cycle for good.