I just want everyone to know I used Hartz 2-1 flea and tick spray on my cat He started drooling and walkinf funny by the next day he was bearley breathing. I took him to the vet they didn’t know if they were going to beable to save his life it was such a bad reaction from the spray. Thank god he survived after spending 2 nights at the vet. I think people need to know about this product and it should be taken off all store shelves. The company Hartz needs to be held accountable for all animals who have been sick or killed from there products.