How to Use Boric Acid for Killing Fleas

Boric acid is a greaty flea-remover because it actually works. Once in contact with the flea, the boric acid sucks all the flea's body moisture out, therefore dehydrating the flea. This is an odorless treatment that can also be very beneficial because you don't have to worry about harmful fumes. Get rid of those fleas for good using these steps.

Use Boric Acid for Killing Fleas
  1. Remove items in the infected room or around the infected area. This includes shoes, toys and any other items on the carpet. Once the area is free of obstructions, aside from furniture, vacuum the entire area. You do need to vacuum under the furniture as well so you might have to move it around. This also includes vacuuming the walls and furniture cushions. This will help the boric acid work more effectively.
  2. Sprinkle infected carpet areas with the boric acid powder. Make sure you sprinkle under the furniture and in closets also. Sprinkle extra powder around your pet's favorite lounging spots in the room.
  3. Use a push broom like this to distribute the boric acid evenly.
  4. Slowly push the powder down and into the carpet using the push broom. Be sure you go in only one direction to get an even spread. Now use a front-to-back sweeping movement to get the powder even deeper into the carpet. Do this until you no longer see the powder on the carpet's surface.
  5. To get rid of the fleas on furniture, sprinkle the boric acid lightly on the furniture and especially the hidden areas. Now take a hand brush and use it like you would the broom, getting the powder deep into the crevices until you can no longer see the powder. Once you are done, just vacuum the rest of the powder off the furniture.

Things You Will Need

  • Boric acid powder
  • Push broom
  • Vacuum cleaner
  • Hand brush


  • Continue to vacuum frequently, at least once a day to make sure you continue getting rid of the dead fleas. After a few days, you can start your regular vacuum routine, but make sure to change the bags or empty the canister of your vacuum.
  • Boric acid is safe to use around pets and children when used appropriately. Read the label if you are still unsure what the proper application is.


  • Boric acid will not have the same effect outdoors that it does indoors and can be toxic for insects, plants and birds.

About the Author

Megan Shannon resides in Arkansas and has been freelance writing since 2006. Her goal is to build her experience and finds great success doing so working at Demand Studios. Since working at Demand, Shannon has increased her knowledge in various topics, but her favorite topic is health.

Photo Credits

  • www.jayscleaning.co.uk, www.starnursery.com