Thanks Hartz! For killing my cat. Is this russian roullette or what? I saw a couple of fleas on my cat and I purchased Hartz Flea product and within 24 hours my cat had granmal seziures, I raced him to the vet. His brain swelled and he died. Someone has got to pay for this, and i don’t mean money. I am going to pursue this legally. I have the pharmaceutical adverse events monitoring experience, as it has been my career to do QA-Validation on various drugs. I would like to see the clinical trials on these products. To allow over the counter approval of poison is beyond me.