Garlic is a chemical weapon against fleas. Fleas detest the smell of garlic and by feeding it to your pets, they will be a walking flea deterrent. Garlic is an anti-fungal, anti-parasitic, and a natural antibiotic that does not destroy beneficial bacteria.Click to see full answer. Similarly one may ask, can garlic repel fleas?Adding brewer’s yeast and garlic to your dog’s food can help to repel fleas. Garlic is sometimes added to these products to help repel fleas. But be careful. Garlic can be very harmful to cats and to some breeds of dogs.Also, will eating garlic repel ticks? A member of the Allium genus, garlic has been valued since ancient times for its antibiotic properties. Garlic is also used to repel ticks. The smell and taste of garlic is disliked by ticks. Apart from ticks, garlic also repels and kills flies, mites, fleas and mosquitoes in the yard. Likewise, people ask, what can humans eat to repel fleas? Top 4 Flea Repellent For Humans (Home-remedies) Eucalyptus Citriodora. This oil contains such a natural chemical which repels fleas. Peppermint Oil. Peppermint oil is considered to be a multipurpose flea control remedy. Rosemary Water. Another natural solution that you can easily use to kill fleas is rosemary water. What can kill fleas instantly? Flea home remedies Dish soap. This home flea remedy involves creating a flea trap using dish soap and some water. Herbal flea spray. Rapid home remedies suggest using an herbal flea spray to get rid of fleas from your home. Baking soda. Salt. Lemon spray. Diatomaceous earth. Rosemary. Flea repelling plants.