Bests & Worsts Reviews from Amazon

I recently bought this again after using it years ago when my cat had fleas, back then it had a pleasant cedar smell and killed the entire flea infestation with one bottle. Now, it smells different, the cedar smell is still there but there is also a chemical smell as well that I don't like, I used the whole bottle and my pets still have fleas. I read the ingredients and noticed that it has SLS in it now, which I KNOW it didn't have before because I had been purposely looking for a flea insecticide that was chemical free when I bought it the first time around. I even wrote a blog about how well it worked back then because everything non-chemical I had tried before that had done nothing. Now it's useless. Very disappointed.