Using vinegar to stop flea itching is a natural way that is both effective and safe. The next time your dog is scratching annoying fleas, use vinegar instead of a chemical pesticide.
Fleas will drown if they are inundated with vinegar. Also, fleas do not like the odor of vinegar, so if your dog has it on his fur, the fleas left alive will most likely jump off the dog.
According to VetInfo.com, the most effective way to use vinegar is to mix 1/4 gallon of it with 3/4 gallons of warm water, then soak a large towel in the solution and wash the dog.
You can also fill a spray bottle with the vinegar/water solution and spritz the dog in between baths. Make sure you do not get the solution in your dogs eyes. Also, this solution is safe to use on furniture and carpets.