Home PestsRoaches

What Spices Do Cockroaches Hate?

Roaches 2

Cockroaches are notorious pests that are known for their resilience and ability to thrive in various environments. While professional extermination is often necessary for severe infestations, there are natural remedies that can help deter these pests. One such method involves using certain spices that cockroaches find repulsive. This article will delve into the types of spices that cockroaches hate and how to effectively use them to deter these pests.


Cockroaches hate several spices due to their strong scents. These include cayenne, garlic, onion powder, peppermint, spearmint, citrus scents, cinnamon, bay leaves, pandan leaves, thyme, basil, citronella, oregano oil, lavender, and rosemary. These spices and their essential oils can be used in various ways to deter cockroaches from infesting your home.

The Top Spices that Repel Cockroaches

Cockroaches detest several spices due to their strong and overpowering scents. Here are some of the top spices that are known to repel cockroaches:

  1. Cayenne, garlic, and onion powder: The strong scents of these spices are known to repel cockroaches.
  2. Peppermint and spearmint essential oils: These oils have a strong minty aroma that cockroaches find repulsive.
  3. Citrus scents: Citrus fruits like lemons and oranges give off a strong scent that cockroaches dislike.
  4. Cinnamon: The strong, sweet, and spicy aroma of cinnamon is known to deter cockroaches.
  5. Bay leaves: The essential oils in bay leaves are toxic to roaches, and their strong scent also acts as a deterrent.
  6. Pandan leaves: The sweet and fragrant aroma of pandan leaves is known to repel cockroaches.
  7. Thyme: This herb has a strong aroma that cockroaches find repulsive.
  8. Basil: The strong scent of basil is known to deter cockroaches.
  9. Citronella: This plant’s strong aroma is known to repel various types of insects, including cockroaches.
  10. Oregano oil: This essential oil has a strong, spicy, sharp odor that is shown to dispel cockroaches.
  11. Lavender: The floral odor of lavender is effective in repelling cockroaches.
  12. Rosemary: This herb’s strong scent is known to deter cockroaches.

How to Use These Spices Effectively

While sprinkling these spices around your home can help deter cockroaches, there are more effective ways to use them. For example, you can create a mixture of essential oils and water and spray it in areas where cockroaches are likely to be found. Here’s how to use some of these spices and oils effectively:

Cayenne, Garlic, and Onion Powder: Mix these spices and sprinkle them around cockroach-prone areas in your home.

Peppermint Oil: Make a mixture of saltwater and peppermint oil and spray it on infested areas.

Bay Leaves: Crush bay leaves into a powder and sprinkle it around areas where cockroaches are likely to be found.

Cinnamon: Place cinnamon sticks or sprinkle cinnamon powder in areas where you’ve seen roaches to keep them at bay.

Rosemary Oil: Mix rosemary oil with water and spray it in problem areas. Rosemary oil has been found to offer a 100% roach mortality rate at certain concentrations.

Catnip: Place small satchels of catnip around areas where you’ve seen roaches to keep them at bay.

Remember to apply these mixtures and spices consistently to maintain their effectiveness.

The Science Behind These Spices

Studies have shown that certain essential oils can repel cockroaches. For example, a study found that almost 99% of brown cockroaches avoided a mixture of oregano oil and acetone, even a week later. Eucalyptus oil, mint oil, yarrow oil, rosemary oil, and lavender oil have also shown repellent effects on cockroaches.

However, it’s important to note that while these natural remedies can help repel cockroaches, they may not be as effective as professional pest control methods in completely eliminating an infestation.


Using spices and essential oils can be a natural and cost-effective way to deter cockroaches from your home. However, for severe infestations, it’s recommended to seek professional help. Always remember that maintaining a clean and dry environment is the best way to prevent a cockroach infestation in the first place.

Frequently Asked Questions

Can these spices harm my pets or children?

Generally, these spices and essential oils are safe to use around pets and children. However, it’s always advisable to use them in moderation and keep them out of reach of children and pets to avoid accidental ingestion or contact with eyes.

How often should I reapply these spices or essential oil mixtures?

The frequency of reapplication can depend on several factors such as the severity of the infestation and the specific spice or oil used. As a general rule, reapplying once a week should be sufficient. However, in case of severe infestations, you may need to reapply more frequently.

Can these spices completely eliminate a cockroach infestation?

While these spices and essential oils can help deter cockroaches, they may not be able to completely eliminate an infestation, especially if it’s severe. For complete extermination, it’s recommended to seek professional pest control services.

Can I use these spices in combination?

Yes, you can certainly combine different spices and essential oils to create a more potent deterrent. However, it’s important to remember to use them in moderation to avoid creating an overpowering scent that could be unpleasant for humans and pets.

Are there any other natural remedies to deter cockroaches?

Yes, apart from spices and essential oils, other natural remedies include diatomaceous earth, boric acid, and borax. These substances can be sprinkled in areas where cockroaches are frequently seen to deter them. However, these substances should be used with caution as they can be harmful if ingested by pets or children.

Leave a Comment

Your email address will not be published. Required fields are marked *