Will Alcohol Kill Fleas. Although it works, it is not a good idea to use it on your furry pet. Adding a small amount of dish soap to the mixture will kill the eggs on contact.

Simply soak a cotton ball with alcohol and apply it to your dog. The rubbing alcohol will kill any adult fleas living on the material, while dish soap will suffocate flea eggs before they are able to hatch, infest, and reproduce. Adding a small amount of dish soap to the mixture will kill the eggs on contact.