Q: While adding windshield washer fluid to my car’s reservoir, I spilled some on the ground and my dog started licking it. I sopped up the liquid before he got more than a taste, but afterward, I wondered: Is windshield washer fluid actually toxic to dogs?
A: Yes. Most windshield washer fluids are about 20 to 30 percent methanol, which is toxic to dogs, cats, humans, and other animals. Some windshield washer fluids are 100 percent methanol, and others contain additional toxic antifreeze products, like ethylene glycol.
