Best Essential Oils For Fleas | How To Use Essential Oils To Kill Fleas


Fleas are more than just a mere annoyance; they are carriers of diseases and can cause distress to both pets and humans. Addressing a flea infestation promptly is essential to prevent the situation from escalating. These tiny insects can quickly infest our pets and homes, turning them into a battlefield of scratching and irritation. Traditional chemical treatments can be harsh and potentially harmful, which is why turning to natural alternatives like essential oils is a prudent choice.

We’re here to provide you with an extensive list of essential oils that have proven to be effective flea repellents, helping you create a safer and more comfortable environment for your family and pets. Essential oils can be used in the form of natural flea treatment to get rid of fleas and ticks. Essential oils are concentrated liquids from plant extracts, so essential oils are completely natural. There are many essential oils that act as natural flea repellents. If you are looking for the best essential oils to repel fleas, then you have reached the right place. 

What Are Fleas?

Fleas are tiny, wingless insects that are notorious for their ability to appear seemingly out of nowhere, often infesting our pets like dogs and cats and homes. They primarily originate from outdoor environments, where they thrive in warm and humid conditions. Common sources of fleas include tall grass, bushes, and wooded areas, where they await the opportunity to latch onto passing animals, such as rodents, birds, or stray cats and dogs.

Once aboard a host, fleas can quickly multiply, laying their eggs in the host’s fur. These eggs then fall off the host and into its surroundings, such as your pet’s bedding, carpets, or furniture, creating an ongoing cycle of infestation. Understanding their outdoor origins and the factors that contribute to their proliferation is essential for effective flea prevention and control.

15 Best Essential Oils For Fleas | Essential Oils To Kill Fleas Or Repel Fleas

The following list of essential oils for fleas includes two different categories of oils: essential oils that repel fleas and essential oils that kill fleas as well as repel them.

1. Lavender Essential Oil

Lavender oil’s delightful fragrance is well-loved by humans but disliked by fleas. Its natural scent acts as a deterrent, making it an excellent option for creating homemade flea sprays. Mix a few drops of lavender oil with water in a spray bottle and apply it to your pet’s bedding, furniture, and living areas.

2. Cedarwood Essential Oil

Cedar oil has a distinct aroma that disrupts the communication among fleas. It is particularly effective at keeping fleas away from your pets. This is one of the best essential oils when it comes to keeping ticks and fleas at bay. Dilute a few drops of cedarwood oil in a carrier oil and apply it to your pet’s collar or sprinkle it around their living spaces. You can also use this oil in aromatherapy. 

3. Eucalyptus Essential Oil

Eucalyptus oil contains compounds that serve as natural insect repellents. Its fresh scent not only wards off fleas but also leaves your surroundings smelling pleasant. Mix eucalyptus oil with water to create a spray that can be used on fabrics, carpets, and pet bedding.

4. Peppermint Essential Oil

The invigorating aroma of peppermint oil is overpowering for fleas. It can be applied in diluted form to your pet’s fur or as a spray for outdoor areas. Create a safe peppermint oil solution by diluting a few drops in a carrier oil.

5. Rosemary Essential Oil

Rosemary oil is a versatile oil with a strong scent, and thus, oil can help repel fleas. You can make a flea-repelling powder by mixing rosemary oil with baking soda and sprinkling it on carpets before vacuuming.

6. Lemongrass Essential Oil

Lemongrass oil‘s citrusy scent is pleasing to humans but repels fleas. Combine lemongrass oil with water and use it as a spray to treat pet bedding and living areas.

7. Thyme Essential Oil

Thyme oil contains natural compounds that are toxic to fleas. It’s a potent option for creating a flea spray for both pets and their living spaces.

8. Geranium Essential Oil

Geranium oil‘s floral scent masks the pheromones that attract fleas. Dilute geranium oil in a carrier oil and apply it to your pet’s collar or their living areas.

9. Tea Tree Essential Oil

Tea tree oil has antiseptic properties that not only repel fleas but also soothe irritated skin caused by flea bites. Use it sparingly and well-diluted, as it can be strong.

10. Citronella Essential Oil

Citronella oil‘s renowned mosquito-repelling abilities extend to fleas as well. It has a strong, lemony scent that irritates the fleas and thus helps repel them. This oil can be used to kill and repel fleas. Use it in candles, diffusers, or diluted sprays to keep fleas at bay.

11. Chamomile Essential Oil

Chamomile oil‘s calming aroma helps repel fleas and soothes irritated skin. It can be diluted and used as a spray on pet bedding and living areas.

12. Clove Essential Oil

Clove oil has been used since ancient times for many different reasons. It is used by people to treat colds, asthma, and muscle pain, as well as to release digestive issues. Clove oil is rich in antibacterial property that helps in repelling as well as killing fleas and other bacteria. However, it is stated that clove oil should not be used for cats and is only suitable for use on dogs with proper care and attention. 

13. Basil Essential Oil

Basil oil is considered to be one of the best oils to repel fleas. It is considered a natural insect repellent that not only repels fleas but other insects and ticks as well. Basil oil is rich in a compound called phenol, which is not considered safe for cats. Thus, you should avoid using this oil for cats. If you want to learn more about the essential oils that are safe to use around cats, you can read it here. You can use this oil on your dog with precaution.      

14. Oregano Essential Oil 

Oregano oil is another effective essential oil against fleas. It contains a compound called carvacrol that acts as a natural flea repellent. This oil can also keep other pesky insects away. 

15. Patchouli Essential oil 

Patchouli oil has a strong fragrance that is earthy and spicy, and thus, this scent repels fleas. It is rich in antibacterial properties and thus can also be used to kill fleas and other insects and bacteria that are bothering your pets. 

Based on the above closer look at what essential oils are available to get rid of fleas, you can now make an informed purchase decision. These oils are effective against fleas and can be used as flea and insect repellent. You can use these oils for fleas and ticks as well. 

10 Benefits of Using Essential Oils for Flea Treatment

When it comes to treating fleas on your pets and in your home, essential oils offer a range of benefits that make them a popular choice among pet owners. These natural extracts from plants provide a holistic approach to flea control. Here are some key benefits of using essential oils for flea treatment:

1. Natural and Chemical-Free

One of the primary advantages of using essential oils for flea treatment is that they provide a natural and chemical-free alternative to traditional flea control products. Many commercial flea treatments contain synthetic chemicals that can be harsh on your pets and the environment. Essential oils, on the other hand, are derived from plants and are generally considered safer for both your pets and your family.

2. Pleasant Aromas

Essential oils come in a variety of pleasant and aromatic scents. Not only do these scents help repel fleas, but they also create a more enjoyable living environment for you and your pets. For example, lavender, peppermint, and cedarwood essential oils are known for their pleasing fragrances that can help freshen the air in your home.

3. Versatile and Customizable

There is a wide range of essential oils available, each with its unique properties and benefits. This versatility allows you to tailor your flea treatment to your specific needs and preferences. For example, you can choose oils based on your pet’s sensitivities or your favorite scents.

4. Repellent and Antiseptic Properties

Many essential oils have natural repellent properties that deter fleas from coming into contact with your pets or inhabiting your home. Additionally, some oils, like tea tree oil, possess antiseptic properties, which can help soothe irritated skin and prevent infections caused by flea bites.

5. Environmentally Friendly

Using essential oils for flea treatment is environmentally friendly. Unlike chemical-based treatments that can have a negative impact on the ecosystem, essential oils break down more easily and pose fewer risks to the environment.

6. Safer for Sensitive Pets

Essential oils can be a gentler option for pets with sensitivities or allergies to commercial flea products. By choosing oils that are safe for your pet’s specific species and breed, you can provide effective flea control without the risk of adverse reactions.

7. Cost-Effective

While essential oils may have an initial cost, they are often more cost-effective in the long run compared to purchasing commercial flea treatments regularly. A little goes a long way, as you typically only need a few drops of oil per application.

8. Easy Application

Essential oils are easy to apply to your pets and around your home. Whether you choose to create a homemade spray, add oils to a diffuser, or apply them to your pet’s collar or bedding, the methods are straightforward and user-friendly.

9. Holistic Approach

Using essential oils for flea treatment aligns with a holistic approach to pet care. It considers the overall well-being of your pets, focusing on natural and gentle methods to maintain their health and comfort.

10. Potential for Multiple Uses

Aside from flea control, essential oils can serve various purposes, from providing relaxation and stress relief to aiding in minor wound care. This versatility makes them valuable additions to your pet care toolkit.

How To Use Essential Oils To Kill And Repel Fleas

When it comes to dealing with fleas on your pets or in your home, essential oils offer a natural and chemical-free solution. These aromatic extracts from plants can be potent allies in your battle against fleas. However, to use them effectively, you need to know how to harness their power. In this section, we’ll explore the various methods and tips for using essential oils to repel or kill fleas.

1. Dilution Matters

Essential oils are highly concentrated, and using them undiluted can be harsh on your pet’s skin or yours. Always dilute essential oils with a carrier oil, water, or an unscented lotion. The dilution ratio typically ranges from 1 to 5 drops of essential oil per ounce of carrier oil, depending on the oil and the intended application. For example, you might use a higher dilution for a spray-on flea repellent and a lower dilution for a flea collar.

2. Topical Application

One of the most common methods of using essential oils for flea control is through topical application. Here’s how you can use essential oil for topical use:

  • For Pets: Mix the diluted essential oil with a carrier oil like coconut oil or olive oil. Apply a small amount to your pet’s collar, bandana, or the base of their tail. Be cautious to avoid sensitive areas like the eyes, nose, and mouth.
  • For Your Home: You can create a flea-repelling spray for your home by adding essential oils to water. Spray this mixture on pet bedding, carpets, and upholstery. Ensure you perform a patch test in an inconspicuous area to check for any potential staining.

3. Flea Collars and Bandanas

A homemade flea collar or bandana can be an effective way to keep your pet flea-free while making them look stylish. Simply add a few drops of your chosen essential oil to the collar or bandana. Ensure the oils are well-absorbed and dry before placing them on your pet. Reapply the essential oils every few weeks or as needed.

4. Aromatherapy Diffusers

For a broader approach to flea prevention indoors, consider using an aromatherapy diffuser. These devices disperse essential oil molecules into the air, creating a pleasant and flea-repelling atmosphere. Oils like lavender, eucalyptus, and cedarwood work well for this purpose.

5. Regular Maintenance

To effectively repel fleas, it’s crucial to be consistent with your chosen method. This might mean reapplying oils regularly, refreshing your home’s diffuser, or re-dusting your carpets with flea-repelling powder. Consistency is key to maintaining a flea-free environment.

6. Consult Your Vet

Before using essential oils on your pets, especially cats and dogs with underlying health issues or those who are pregnant or nursing, it’s wise to consult your veterinarian. Some essential oils can be harmful to certain animals, and a professional opinion will ensure the safety of your pets.

7. Monitor for Adverse Reactions

Keep a close eye on your pets after using essential oils. Look out for any signs of adverse reactions, such as skin irritation, excessive scratching, or behavioral changes. If you notice any of these symptoms, discontinue use and seek advice from your vet.

Homemade Essential Oil Recipes To Get Rid Of Fleas

Recipe #1 – Flea-Repelling Spray for Pets


  • 2 ounces of distilled water
  • 1 ounce of witch hazel
  • 10 drops of lavender oil
  • 5 drops of cedarwood oil
  • 5 drops of peppermint oil


  1. Mix the distilled water and witch hazel in a spray bottle.
  2. Add the essential oils to the mixture.
  3. Shake well before each use.
  4. Lightly spray your pet’s fur, avoiding their eyes, nose, and mouth. You can also spray their bedding and favorite resting spots.

Recipe #2 – Homemade Flea Collar


  • 1-2 drops of lavender oil
  • 1-2 drops of cedarwood oil
  • A cloth collar or bandana


  1. Add the essential oils to the collar or bandana.
  2. Allow the collar or bandana to dry completely before putting it on your pet.
  3. Replace the essential oils every 2-4 weeks or as needed.

Recipe #3 – Flea-Repelling Diffuser Blend


  • 4-5 drops of eucalyptus oil
  • 4-5 drops of lemon oil
  • 4-5 drops of tea tree oil


  1. Fill your essential oil diffuser with water.
  2. Add the essential oils to the diffuser.
  3. Turn on the diffuser and let it disperse the aroma throughout your home.

Recipe #4 – Flea-Repelling Carpet Powder


  • 1 cup of baking soda
  • 10-15 drops of lavender oil
  • 10-15 drops of lemon oil


  1. In a bowl, mix the baking soda and essential oils until well combined.
  2. Sprinkle the mixture evenly over your carpets and rugs.
  3. Let it sit for about 15-20 minutes.
  4. Vacuum your carpets thoroughly to remove the powder, along with any fleas and their eggs.

Recipe #5 – Flea-Repelling Pet Shampoo


  • 1 cup of mild pet shampoo
  • 10 drops of eucalyptus oil
  • 5 drops of tea tree oil


  1. Mix the essential oils into the pet shampoo.
  2. Bathe your pet with this shampoo, lathering it well and paying special attention to the neck, back, and legs.
  3. Rinse thoroughly, ensuring all soap is washed out.

Remember to always monitor your pet for any adverse reactions when using essential oils. If you notice any unusual behavior or skin irritation, discontinue use immediately and consult your veterinarian. Additionally, ensure that the essential oils you use are safe for your specific type of pet, as some oils may not be suitable for certain animals.


So, now it is safe to say that you have a general idea of where fleas come from and how to get rid of them by just using a few drops of essential oils. However, there are some points that one should keep in mind before using essential oils. You always need to dilute essential oils before applying them topically.

Undiluted essential oils are highly concentrated and can irritate your skin, and undiluted essential oil is toxic to your pets. So, always be careful while applying essential oils topically. Essential oils are natural remedies and thus are safe to use around your pets, but still, it is suggested to use in very small quantities. Also, while diffusing essential oils, ensure that the room is properly ventilated.