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Will Sea Salt Kill Fleas?

Sea salt is touted as a natural way to kill fleas and can sometimes kill adult fleas, but it is an unreliable way to eliminate fleas from the home or yard. Sea salt or any other kind of salt cannot kill flea larvae.

Use

Adult fleas do not stay permanently on hosts and often hop off to carpets or furniture. Vacuum or steam clean carpets and furniture. Sprinkle sea salt liberally in carpets. Sprinkle sea salt in lawns, although birds and insects may eat the salt.

Speculation

Sea salt is thought to kill fleas by dehydrating them. But vacuuming and steam cleaning without using salt can also kill adult fleas and flea larvae. So using the salt is probably unnecessary if a home is regularly vacuumed.

Fun Fact

Adult fleas die in salt water, according to the Environmental Health Association of Nova Scotia. If you can't bring pets to the ocean, make a bath with sea salt and water and dip the pets in it.

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About the Author

Rena Sherwood is a writer and Peter Gabriel fan who has lived in America and England. She has studied animals most of her life through direct observation and maintaining a personal library about pets. She has earned an associate degree in liberal arts from Delaware County Community College and a bachelor's degree in English from Millersville University.