You can buy the Braggs apple cider vinegar at just about any Sprouts or Henrys grocery store, the natural foods type store generally. I have not used it but it sounds like a good alternative to one of the chemical sprays. Question, I have been using a advantix k9 which was recommended by my vet, but am now out. Vet said to use it Apl thru Oct, start up again next year. Is this OK here is So Cal with it being no cold weather to kill off fleas etc? What about the heart worm stuff? I HATE the chemicals into my baby but I am so worried about the BUGS etc. Thanks for the info.