The misleading claim was published on Facebook here on April 1, 2020.
The post's text image reads: "Please DO NOT pet your dog or any pet after using hand sanitiser. It contains ethanol glycol that's also found in anti-freeze that's toxic to them!! They might lick the area you've touched them. Please share to make others aware."
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Below is a screenshot of the misleading post:
Other instances of the same post appeared on Facebook here, here and here.
The claim is false.
Anne Peaston, an associate professor from the University of Adelaide's School of Animal and Veterinary Sciences, told AFP that hand sanitiser is generally safe to use around animals.
"Hand sanitisers contain various chemicals such as glycerine (glycerol) and propylene glycol," she explained in an email on April 17. "Glycerine is sweet and is commonly used in cooking e.g. fruitcakes. It is non-toxic."
Peaston added that propylene glycol is a less toxic chemical substitute for ethylene glycol -- the key chemical in antifreeze -- and is only potentially harmful if ingested in large amounts.
Propylene glycol is "generally recognised as safe for consumption by humans, dogs, and other animals", however, it can be toxic to cats if ingested in large amounts, Peaston said.
"If the hands are wet with sanitiser, it is possible that a tiny amount could be left on the cat fur, and the cat will clean it off by licking. Even so, this tiny amount is highly unlikely to be sufficient to be toxic to kitty unless the particular cat is remarkably sensitive to the chemical," she said.
Peaston said that depending on the brand of hand sanitiser, quantities of propylene glycol can vary from small to none.
"It is prudent to store sanitisers out of reach of pets and small children, avoiding the possibility of accidental ingestion," Anne Peaston, associate professor from the University of Adelaide's School of Animal and Veterinary Sciences.
Alcohol, however, can be a dangerous toxin in hand sanitisers for animals and humans.
"Dogs and cats are usually repelled by high alcohol liquids rather than attracted to them. However, it is prudent to store sanitisers out of reach of pets and small children, avoiding the possibility of accidental ingestion," Peaston said.
Pet Poison Helpline, an animal poison control service in North America, also noted here that hand sanitiser is "typically unpalatable to pets". The service added here that alcohol in hand sanitisers can have the same dangerous effects on animals as hard liquor.