I purchased Hartz UltraGuard Pro Flea and Tick Drops for Cats about a week ago for my pet. She was having a heck of a time after a heat wave following an unseasonably cool summer. The fleas came to life and got to her with a vengeance. Olive was a 9-10 lb, four year old black long hair. She was the sweetest, most affectionate cat that I’ve ever met. She was very special. Today is Wednesday following Labor Day weekend. Four days ago, on Saturday, I applied the medication to her neck, exactly as directed on the package. I have used other, more expensive flea meds before, so this was not a new procedure to me. As I’m trying to be as frugal as possible at the moment I bought the Hartz drops, hoping to save a few dollars. I was not aware of the true cost of using this product. On Monday, which was Labor Day, I found Olive in the back yard laying on her side. I was watering the plants and wondered why she didn’t look up when she heard the hose. I stood quietly for a moment and looked at her lifeless body. She wasn’t breathing. She was dead. In my experience a four year old cat dying out of the blue without any trauma or illness is highly unusual. I have a strong feeling that I inadvertently killed Olive by giving her Hartz UltraGuard Pro Flea and Tick Drops. I am extremely sad that this happened. If I had the opportunity to do it again I would not have tried to save money at her expense. I didn’t know that their product was dangerous. I assumed it was safe. I was as wrong as can be.