Does Borax Kill Fleas | How to Get Rid of Fleas

Borax is used for various household and garden chores but does borax kill fleas? Clear your doubts about borax’s effectiveness in killing fleas here.

What Are Fleas?Does Borax Kill Fleas1

Also known as ‘Aphaniptera,’ fleas are a small wingless parasite that feeds on cats, dogs, and other warm-blooded hosts. 1/8 inch long in size, fleas body color ranges from brown to black. There are 2500 different types of fleas available all around the globe. However, they don’t usually bite human beings but can do to get a meal.

What Temperature Kill Fleas?

Fleas and their larvae do not survive outdoors in a hot and sunny climate. Soil temperature more than 95°F kills fleas’ larvae. Recreating such a hot environment indoors is not a good idea. Instead, try borax and other natural remedies that are described later in this article.

How to Spot the Sign of Fleas?

Do a thorough inspection of your pup to find out the below-mentioned signs of a flea infestation.

  • Search dog’s fur to find flea dirt, which is the buildup of flea’s blood and feces.
  • If your pup scratches constantly and develops red patches or lesions due to flea bite.
  • Due to flea bite, dogs scratch and lick the sore area frequently and this results in hair loss around the neck and tail.
  • If your pooch has pale gums, this is a sign of flea anemia, which needs immediate attention.

But if you have a cat, then check out the below signs of flea infestation.

  • Cat does intense and frantic scratching or biting on her skin due to flea bite.
  • Kitty is a fastidious groomer, but this chore becomes excessive due to fleas, causing hair loss.
  • Feeling agitation, edginess, and restlessness is also a sign of flea attack.
  • Visible red skin lesions present all over the cat’s body.
  • Cat having muscle loss, pale gums, and lethargy reflects a fleas issue.
  • Tiny pepper-like specks present on the cat’s fur are flea dirt that assures fleas infestation.

Does Borax Kill Fleas?Does Borax Kill Fleas2

Borax eliminates fleas by desiccating them from inside out because of its desiccant action. However, this method works when fleas ingest borax. Unlike blood, they do not eat borax voluntarily.  But, you can force them by sprinkling borax all over the fleas infected area. Due to this, borax gets stuck on their body parts, and they clean themselves by licking it. Avoid borax usage on your dog and cat skin, as it’s harmful to them.

Pets often bring fleas with them unsuspectingly by contacting wild animals; thus, these annoying pests breeds and take over your carpet, cloth-covered furniture, and pet beddings. Try the below steps to eliminate fleas infestation from these places.

  1. Take a glass jar and poke some holes in the lid.
  2. Fill the glass jar halfway with borax and close the lid.
  3. Now, sprinkle borax all over the carpet, pet bedding, furniture, and where the flea infestation exists.
  4. Leave it for 10-12 hours, allowing the borax to do its work.
  5. After that, vacuum the spot thoroughly and dispose of the vacuum bag’s content in the trash can.

Natural Ways to Kill fleas On PetsDoes Borax Kill Fleas3

Borax is not a safe product to eliminate existing fleas from your pet’s fur and skin. That’s why we have collected some natural remedies to get the job done and not to mention they are safe too.

1. Lemon Bath

Pour 1/2 cup of lemon juice, 2 cups of water, with a squeeze of pet-friendly shampoo into a bowl and mix them well. Transfer the mixture into an empty old shampoo bottle. Spread the solution all over the pet’s body and run a brush to create lather. Wait for 3-5 minutes, then clean your pet with tepid water, and towel dry as usual.

2. Try Flea Combs

No remedy is better than the exceptional flea comb. It’s specifically designed to take out fleas, eggs, and flea dirt. Before starting the flea removing process, put newspaper or cloth under your pet to catch the running fleas. Start combing your pet’s fur and once done, clean the comb with warm soapy water.


While using the borax and above natural ways to kill fleas, make sure to keep in mind the below precautions to avoid complications.

  • If your pet has any skin-related issues, it’s better to avoid the flea removal methods mentioned above. Take it to a vet instead.
  • Keep your kids and pet far away from the borax treated space, as its ingestion and inhalation is harmful.
  • Wear a good quality face mask and hand gloves while dealing with borax for safety purposes.
  • If you believe your pet gets exposed to borax, call the vet immediately.

Flea Prevention Tips

After making your home free from the pesky fleas, it’s important to take some preventive measures to inhibit their further infestation.

  • Regularly vacuum your home, especially where your pets sleep and play.
  • Cleanse your pet’s washable belongings daily in the washer on a hot water setting. Put their non-washable items under direct sunlight for a couple of hours.
  • Use flea combs on your pet on a daily basis.
  • Keep the wild animals far away from your yard as they harbor fleas.
  • If you hang out with your pet in the car often, then clean the car properly.
  • Mow the grass, trim trees and shrubs in your yard.


The above article is what you need to fight against the flea infestation. Besides killing the blood-sucking fleas, borax uses are numerous and can simplify your life.

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