The Popular Flea Killing Hack That Doesn't Actually Work, According To Veterinarians

These days, there are many popular "hacks" for treating fleas on pets without the use of medications. Natural flea remedies have always been a popular trend, however, there's one that could actually be dangerous to your pets — feeding them garlic mixed with brewer's yeast. The idea behind the hack comes from a belief that this combination of ingredients will cause your pets to secrete certain odors when they sweat, making their bodies off-putting for fleas to bite. However, many veterinarians are warning that this hack doesn't work — and is also potentially dangerous.

Speaking to PetMD, Dr. Mike Hutchinson, a veterinarian in Pennsylvania, warned pet parents that this hack doesn't work: "Garlic is not an effective flea or tick repellent on dogs or cats, since they don't sweat like humans." Canines and felines have most of their sweat glands on their paw pads. The bulk of their actual cooling also happens through panting. Both of these places are not spots that fleas frequent, making it difficult for the hack to be effective.

What's more, garlic can be toxic to pets, and even lead to an illness called allium toxicosis, which can result in symptoms ranging from lethargy to death. Cats are most susceptible to this condition, but may not show signs of toxicity until a very large amount is ingested. But even small amounts of garlic can cause GI upset. Long-term use can lead to anemia. VetStreet's Dr. Marty Becker recommends always checking out the ASPCA's list of toxic foods to avoid giving pets before trying out any natural remedies for flea treatment

With the garlic hack off the table, you may wonder what to do if your pet has fleas. The best course of action is to follow your care team's advice and use a vet-approved flea treatment. These are safe and effective when used properly under veterinary supervision. If you're looking for flea treatments for younger pets, such as a puppy under 12 weeks of age that can't use regular medications, daily flea combing and a bath in dishwashing detergent is a safe alternative.

There are many natural remedies that can be used to treat fleas without being toxic to your pets. Regularly cleaning their bedding, as well as the baseboards, carpets, and other places your pet frequents, can also help break the flea life cycle and ultimately get rid of fleas in the house. Be sure to wash all bedding in hot water or toss things that can't get wet on high heat in the dryer to kill adult fleas. Vacuuming and steam cleaning carpets can also effectively kill flea eggs.

Apply boric acid and diatomaceous earth to carpets and other nooks and crannies where fleas may be hiding. Bear in mind it's best to use these substances without your pets in the room to keep them from accidentally inhaling any fine particles. While the garlic hack seems like an easy way to kill fleas, it's always best to check with your vet to make sure any treatments are safe and appropriate for your pet.