Here are some ways to kill cockroaches instantly:

• Baking Soda: Mixing sugar with baking soda will lure the roaches to eat, and the baking soda will cause their stomachs to swell and eventually explode.

• Bleach: Spraying cockroaches with bleach or an ammonia mixture will poison them, but be cautious with this powerful chemical.

• Borax: It dehydrates the cockroaches’ exoskeletons and kills them.

• Boric Acid: It dehydrates the exoskeleton until they die.

• Soapy Water: Dousing a cockroach in soapy water will suffocate and kill it. Filling a spray bottle with dish soap and water, shaking it, and spraying a roach from above will kill it quickly.

• Freezing: Place the insect in a plastic bag and put it in the freezer for a few hours. The cold temperature will kill the cockroach instantly, and it can then be disposed of safely.

• Electronic Traps: They work by using bait to lure the cockroach into a trap, where an electric shock is delivered, killing the insect instantly.

• Insecticidal Sprays and Aerosols: They target and eliminate roaches upon contact.

Its important to note that while these methods can be helpful when you see one cockroach, they won’t necessarily solve the larger problem. The best way to handle a roach infestation is to call a pest control specialist.