Natural Ways to Get Rid of Cockroaches Safely and Effectively

If you’re tired of using harsh chemical sprays to kill cockroaches, there’s good news — you can keep these unwanted guests away using natural ingredients already available in your home. These methods are not only effective but also safe for your family’s health and the environment.

1. Repel Cockroaches with Peppermint Essential Oil

Peppermint essential oil has a strong, refreshing scent that most people find pleasant — but cockroaches absolutely hate it.

To make a natural cockroach repellent, mix 10–15 drops of peppermint oil with a cup of clean water, then pour the mixture into a spray bottle. Shake well before use. Spray it around the kitchen sink, under cabinets, near the garbage bin, in bathrooms, and along corners where roaches usually hide.

Because peppermint oil is a natural and non-toxic substance, you can safely use it around children and pets. For a stronger effect, you can add a few drops of tea tree oil or eucalyptus oil, both of which have insect-repelling properties.

2. Use Citrus Peels – Orange and Lemon

Cockroaches dislike the fresh, zesty smell of citrus fruits such as oranges and lemons. Their peels contain natural essential oils that act as a mild repellent.

You can dry the peels under sunlight and place them in areas where cockroaches often appear — such as near drains, behind the fridge, or in kitchen corners. The dried peels not only repel insects but also keep your kitchen smelling clean and pleasant.

Alternatively, mix lemon juice with clean water, pour the solution into a spray bottle, and use it to wipe or spray surfaces. It helps both disinfect the area and drive away cockroaches naturally.

💡 Tip: Replace the peels every few days to maintain their effectiveness.

3. Eliminate Cockroaches with Garlic and Onion

Garlic and onion are two powerful natural repellents with a strong, pungent odor that cockroaches can’t tolerate.

Simply chop or crush a few cloves of garlic and slices of onion, then place them in small dishes or paper cups around areas where roaches are frequently seen. The smell will drive them away almost instantly.

You can also use garlic or onion powder if you prefer a cleaner method. However, be sure to place it in corners or hidden spots to prevent the powder from scattering due to air movement.

For better results, combine garlic, onion, and baking soda — this trio can both repel and kill cockroaches effectively.

4. Use Alum (Potassium Alum)

Alum, commonly known as phèn chua in Vietnamese, has a distinctive smell that deters cockroaches.

To use it, dissolve some alum in warm water and use the solution to mop your floors. Let the floor air dry naturally. The alum residue seeps into cracks and gaps in the floor, leaving behind a scent that cockroaches find unpleasant, discouraging them from entering your home.

Regular cleaning with alum water can help maintain a pest-free environment and keep your home fresh.

5. Kill Cockroaches with Baking Soda

Baking soda isn’t just for cleaning or deodorizing — it’s also a powerful natural cockroach killer.

Mix equal parts baking soda and sugar, breadcrumbs, or dry pet food crumbs. The smell of food will attract cockroaches, while the baking soda will react with their stomach acid after ingestion, producing gas and ultimately killing them.

Place small portions of this mixture on bottle caps or paper plates and distribute them around dark, damp areas. Check and replace the bait every few days for best results.

6. Repel Cockroaches with Mouthwash

Surprisingly, mouthwash can also be used as a cockroach repellent. Many mouthwashes contain essential oils and alcohol, both of which are irritating to insects.

Mix half a cup of mouthwash, a spoonful of liquid detergent, and a cup of clean water in a spray bottle. Shake the mixture well and spray it directly on roaches or around their hiding spots.

This homemade spray serves as a safer alternative to chemical insecticides sold in stores, offering the same effectiveness without toxic fumes.

Final Thoughts

Getting rid of cockroaches doesn’t always require toxic chemicals. By using simple, natural ingredients like peppermint oil, citrus peels, garlic, alum, baking soda, or even mouthwash, you can protect your home from these pests in an eco-friendly way.

Consistency is key — repeat these natural treatments regularly to maintain a clean, roach-free environment while keeping your family and pets safe.