Re: “Poisoning our pets”

I have four yorkies and two days ago I put sevin dust in the yard to kill the fleas and now two of my dogs have been having vomiting and diarrhea. Since they don't go outside unless we are present and have had nothing else new in their diet or the environment nor have they been anywhere to catch something contagious I wonder if some dogs are sensitive to sevin dust and others are not. For years I have used sevin dust on my cats with no ill affect, but I won't be using sevin dust anymore just in case. I also use frontline but since I live in the deep south of Alabama (the flea capital of the world) we are constantly battling fleas. I will have to find something else that is safer than sevin dust. If anyone has any suggestions I would greatly appreciate it.