Rubbing lemon or orange juice on a pet's fur and bathing a pet in water are natural flea treatments, according to petMD. It also helps to clean the home thoroughly, including pet beds, furniture covers and floors.
While the fresh juice of a lemon or orange can repel fleas, the oil extracts of these fruits are harmful for cats and dogs, which is why pet owners should avoid using citrus oil products on pets, notes petMD. Veterinarians advise dipping pets in water and rubbing in a small amount of regular dish liquid or gentle pet shampoo to get rid of fleas. When cleaning the house, pet owners should avoid using products containing volatile organic compounds and make sure to throw away the vacuum's bag or canister, where fleas continue to survive.