Natural Flea Treatments| Does Salt Kill Fleas?

Salt as a Natural Method of Flea Control

Conventional flea control treatments are effective, but not everyone wants to use them.  You may feel that you don’t want to use chemicals on your pet or you may baulk at the cost.  Whatever the reason, many people are keen to try natural methods of getting rid of fleas.  One such natural flea remedy is salt.

Can salt kill fleas, or should you save it for your food?

This post is about:

  • How salt can kill fleas
  • How to use salt to get rid of fleas
  • The pros and cons of using salt in flea control

How Salt Kills Fleas

Salt is a natural dehydrating agent and it is said to kill fleas by desiccation, ie it dries out the bodies of the adult fleas and breaks down the cell walls of the immature stages of the flea.

You should only use salt around your home, never directly on your pet.

How to Use Salt to Get Rid of Fleas

You don’t need a particular kind of salt to kill fleas, ordinary table salt or sea salt is fine.  However, if you do choose to use it, try to refine it into a powder.  You can do this in a food blender.  Once you have your powder:

  • Sprinkle it over your carpet in a thin, even layer;
  • Work it into the carpet by brushing;
  • Leave it for at least 12 hours, no more than 48 hours;
  • Use a vacuum cleaner to thoroughly remove the salt;
  • Empty your vacuum cleaner, seal the bag and dispose of it outdoors.
The Advantages of Using Salt to Get Rid of Fleas
The use of salt for flea control offers some advantages:
  • It’s cheap.
  • It’s natural.
  • It can be effective on fleas in the environment.
  • The method used, ie vacuuming, is an effective tool in managing a flea infestation whether you use salt or not.

The Disadvantages of Using Salt to Control Fleas

Whilst salt offers a few attractive benefits for your flea control regime, it does have some drawbacks.

  • It treats only the environment, not your pet.  For a flea treatment to be effective it needs to target all stages of the flea life cycle on your animal and in the home.
  • Salt can be messy to use, particularly if your home is damp or humid, as it will attract moisture and could leave you with a sticky carpet.
  • This is a time consuming method as you will need to wait for up to two days to remove the salt.
  • You will need to keep your pets away from the areas you are treating, or they could lick up the salt and make themselves ill.
  • If you plan to use salt on a regular basis you should check that your vacuum cleaner can cope.  Salt may clog and damage its filter or attack any metallic parts.


  • Salt can kill fleas in your home
  • Salt cannot be used directly on your pets, so it is a complementary method of flea control.  You will need to treat your animals separately.
  • It is likely that it is the regular vacuum cleaning of your home that is effective in getting rid of fleas in your home, rather than the salt.
  • As long as you exercise care in keeping your pets away from the salt, it is not going to do any harm.