Killing Roaches Naturally

Killing Roaches Naturally

Surprisingly, we never had any pest problems during our time in China until about two years ago. Even when we lived over one of Shenzhen’s most popular (and filthy) food streets, we never had issues with roaches and our pets never had fleas. It wasn’t until we moved into a fancy (for us) apartment building in a new development that we suddenly had roaches and the pets got fleas.

The roach infestation was horrendous. They were absolutely everywhere. We tried everything to get rid of them. RAID, bombs, exterminator quality poisons, traps. Nothing worked. And when we moved to another apartment, the little monsters traveled with us and were even worse! Walking into the kitchen at night was like walking into a den of nightmares. Remember the scene from Indiana Jones and the Temple of Doom where Billy lifts her lantern to discover she is SURROUNDED by bugs? Yeah, it was kind of like that.

So I was of course desperate to get rid of the bugs, but nothing had worked and I didn’t like using so much poison anyway. I have a very small dog and cat and a new baby, so since the chemical poisons weren’t working anyway, I wondered if there was a natural alternative.

And there was! I discovered boric acid. Boric acid is a naturally occurring substance from volcanic regions. The look and texture of boric acid is very similar to baking soda.

While boric acid can cause some mild irritation to humans and pets, it is not toxic, so it is safe to use. Just wash your hands after use. Boric acid works as a sort of stomach poison to the roaches. Even better, they don’t die instantly, but crawl back to the nest to die where the other roaches cannibalize them, thus poisoning the nest-mates as well.

If you plan to use boric acid, be patient! The roaches will not die instantly. You will still see roaches the next day, and probably the next, but over time, the roach numbers will dwindle until one day you say, “Hey, I haven’t seen any roaches lately.” You should notice a significant decrease in the number of roaches you see within a few days and they should be nearly gone in about a week or two.

While there are several “recipes” out there for using boric acid as a bait and poison (like mixing the boric acid with powdered sugar), I have found this to be totally unnecessary. I simply sprinkle a light dusting wherever the roaches seem to travel, like along the back of the counters, behind the microwave, or around the refrigerator. You don’t want to create piles of powder as the roaches will simply walk around it.

Boric acid can also work on other small pests like ants, termites, and silverfish.

If you live in the US, you can easily find boric acid on Amazon. If you are in China, you can find boric acid (硼酸) on Taobao.

Have you tried boric acid or another natural way of dealing with pests? Let me know in the comments!

  • Derek Anderson

    BTW using a special mixture of Isopropyl Alcohol, Glycerine and Boric Acid is great for the ears of divers as it breaks the water film lubricates the ear drum and kills any critters you pick up in the water – lake or ocean.

    • That’s good to know. I have never been scuba diving, but I am dying to learn. I really want to go back to Bali just to go scuba diving.

  • Derek Anderson

    Seth has his SCUBA certification. We might could get you certified while here if there is time in your schedule or at least familiarize you enough so you could get certified elsewhere.

    • That’s a good idea! I wasn’t very comfortable with the slapdash certification done right before I jump in the ocean, so getting it done while I’m in the US would be great.

  • ClickClick

    We find that Diatomaceous Earth works better. We live in Charleston, South Carolina, and the fleas have been awful. We shelter cats, and we are using it all over our yard, and in our house. We started using it a year ago, and we have not had any roaches. Fleas have the same hard structure shell as roaches, so it works the same way.

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