4 Sons 'R' Us: Natural Flea Shampoo For Dogs 1 cup Dawn 1 cup Vinegar 1 quart warm water (Tried this today [12/3/2013] and it definitely seemed to work. Not sure how long it will keep the fleas off, but it killed the ones that were there and the short haired dogs coats are shiny and the long haired dog is soft & fluffy. They all smell nice too. ~J)
Citrus is a natural flea deterrent and is great for your pet’s skin. Combine four slices of fresh lemon, one tablespoon of salt, and six cups of water into a pot. You should bring this combination to a boil for two minutes and then turn off the heat and let the concoction steep for a full day (24 hours).Apply the lemon wash generously to your pet to help heal any bug bites they may already have as well as condition their damaged skin. This lemon wash can be repeated daily if needed.
6 Ways to Naturally Prevent and Get Rid of Fleas on Dogs. I have actually used the vinegar wash and it does work, but do it outside, it makes fleas flee and you don't want them jumping off into your carpet inside.