Will cider vinegar kill fleas?

Updated November 21, 2016

Many pet owners are fearful of fleas infesting their dogs and cats, but they also do not want to use chemical-laden medicines, flea dips or flea collars on their beloved pets. Apple cider vinegar is a natural way to control fleas --- although it is not deadly to the pests.


Apple cider vinegar is not an insecticide, so it does not kill fleas. Rather, it acts as a natural flea repellent.


Apple cider vinegar, like other types of vinegar, is a naturally acidic substance. Fleas generally shy away from acid and stay away from animals treated with apple cider vinegar, according to the Care 2 Healthy and Green Living website.

Food Supplement

Adding one tsp of apple cider vinegar to a pet's drinking water is the ideal way to boost its natural ability to ward off fleas. The vinegar also relieves the itch associated with fleabites. Apple cider vinegar supplements also help boost a pet's immune system, according to Earth

Flea Spray

Some pets may not drink water containing apple cider vinegar, so you may have to use apple cider vinegar as a topical flea spray. Mix equal parts of apple cider vinegar and water in a spray bottle and spray it on a dog's coat, recommends Care 2 Healthy and Green Living.

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