This morning I gave my healthy 3 year old cat one dose of Hurtz Ultra Guard One Spot Treatment. By 3 pm he was shivering and squinting. By 4 he had his first seisure. He died at the vets around 6pm. The vet said this is common. The dog is currently looking for his buddy. I see this has been going on for some time. Why the hell is it still on the shelves!?