You shouldn’t use Listerine as a mosquito repellent

  • By cvbizz
  • June 25, 2021
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A social media post making the rounds claims you can use Listerine mouthwash as a repellant for mosquitoes.

A WCNC Charlotte viewer emailed the VERIFY team and asked if the social media post is true. We reached out to a Charlotte-based doctor to clarify these claims.

THE QUESTION

Can Listerine mouthwash be used in place of bug spray to repel mosquitoes?

SOURCES

Centers for Disease Control and Prevention
Listerine
Family Physician, Doctor Karla Robinson

THE ANSWER

No, you cannot use Listerine in the place of a bug spray. According to Dr. Karlan Robinson, it does repel mosquitoes, but those effects don’t last very long.

Robinson told the VERIFY team that it hasn’t been studied as a topical treatment and recommends using regular or organic bug spray to keep those pesky insects away while outdoors.

WHAT WE FOUND

According to Robinson, the ingredients Eucalyptol and Menthol are key components to help repel mosquitos. On a bottle of Listerine, those ingredients include .09% of Eucalyptol and .04% of Menthol.

“The ingredient itself is effective, but the amounts in Listerine aren’t as high as you would see in a typical insect repellent that does, in fact, have long-lasting effectiveness,” said Robinson.

According to data from the CDC, products with these ingredients provide reasonably long-lasting protection. However, the agency states products with less than 10% on the label may offer limited protection.

“Listerine is mostly alcohol and water and evaporates fairly quickly when on the skin, so the effectiveness of this being a true repellant isn’t as long-standing as you would think the other traditional insect repellents could be,” said Robinson.

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