I had a Puppy named Duke he was a Small dog, was my family heart, I buried him 9 days ago. We used the Hartz 2 in 1 Flea and Tick spray on him, And within a few mins I noticed him acting strange.. I told my husband he was acting weird and he Said he was just tired.. I didnt think so.. So I bathed him and he went to acting better right away.. but it was to late. damage was done.. I will never purchase hartz again.. they destroyed my family and took my baby away from me.