Mix one cup liquid dish soap, one cup white vinegar, and one quart of warm water in a large bowl. Transfer the mix into a squeeze bottle (like an old shampoo or body wash bottle). Shake before using. Wash your dog with mix as you normally would. Try to allow the mixture to sit for about five minutes before rinsing out.
A friend told us about a method is very effective. 1 gallon of water, add 4 to 6 teasoons of white vinegar to it, and give it to your pets as their only drinking water. We havn't seen a flea in over ten years. It works on any animal. We have a dog (7yo) that has never seen a flea. Commercial flea preparations are bad for the health of our pets AND US!! I am going to try this. I imagine it sours the blood? We will see! I hate Chemical treatments!!!