What they mean is that the ingredients in there are "G.R.A.S."
That means the EPA and chemical manufacturers consider the stuff in there to be "Generally Regarded As Safe"! It's either been around long enough to have a known factor of safe use...or the ingredients have all been determined o be safe for Dogs and you.
Things like this that are in our daughters fancy, expensive hair shampoo!
Off Pet Shampoo Label- "Essential oils including Rose, Geranium, Peppermint, Lemongrass, Thyme and Cinnamon." Sound like my Grandma's Herbal Tea!
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My posts shouldn't be taken for factual data, and are purely fictional, for entertainment purposes, should not be constituted as related to scientific, technical, engineering, legal, religious, spiritual, or practical advice. After all it's FREE! Amen. :W