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Depending on what “it” refers to, a variety of effective options can tackle cockroaches in your home. These range from commercial sprays to DIY household mixtures. [1, 2, 3]
Here are the most common solutions that kill cockroaches:
1. Commercial Sprays and Gels
These provide quick, targeted action and are easily sourced from local hardware and grocery stores. [1, 2, 3, 4, 5]
  • Gel Baits: Products like Maxforce or Kill-Roach Gel (widely available in South Africa) are highly effective. You apply them in cracks, crevices, or under appliances. Roaches eat the gel, return to the nest, and pass the poison on to others.
  • Aerosol Knockdown Sprays: Products like Efekto No Insect Indoors or Dyroach kill roaches instantly on contact.
  • Residual Sprays: Sprays like Efekto No Roach 25 SC leave a long-lasting chemical barrier where you spray them

DIY Household Methods

If you prefer not to use harsh chemicals, you can make effective, pet-friendly, and inexpensive roach killers using items already in your kitchen: [1, 2, 3, 4, 5]
  • Baking Soda & Sugar: Mix equal parts baking soda and sugar. The sugar lures them out, and the baking soda reacts with the stomach acid in the cockroach, eventually killing it. [1, 2]
  • Boric Acid (Borax): Mix boric acid with a sweet substance like honey, peanut butter, or sugar and leave it in hard-to-reach areas. When the roach ingests it, it acts as a lethal insecticide. Note: Keep this out of reach of children and pets, as it can be toxic. [1, 2, 3, 4]
  • Soap and Water: A mixture of standard dish soap and water in a spray bottle creates a solution that destroys the protective waxy layer on a cockroach’s body, suffocating and killing them on contact.


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