I read in here a long time ago that some folks use Apple Cider vinegar to help control fleas... I'm wondering how much do you use per gallon of water. I've just been putting a splash in with the water in my dogs bowl in the past, but lately I hadn't been using it. It's starting to get warm again when it's not raining so I want to start using it and I think I'm putting tto much in my dogs water. I'm using a 5 gallon bucket and when it was half empty I went to fill it up with the water hose and it started foaming up like I had put some dish soap in it. I think that means I'm using too much !! How much should I use ???