I am so sorry for all of you who have had your pet suffer or lost a pet due to Hartz products. I came across this site while searching for Hartz products to control fleas that my Siamese Cat just got when he went to the vet. I was going to go to WalMart in the morning and most likely buy a Hartz product for him, but after reading your stories I am appalled! I can’t believe the horror stories that I just read and my heart goes out to all of you whose beloved pets have fallen victim to these products. I want to thank the owners of this site, because of you my beautiful boy will be saved from a similar fate.