So I’m a manager and technician at a vet clinic and have been hearing some horror stories like these from clients and decided to do some research and found this website. I am so disgusted by this product and am saddened that it is still on shelves. We are definitely warning clients against using any Hartz products and now will add Sergeant’s to the list. My advice for flea control is to use a liquid product with the active ingredient Fipronil; these would either be Frontline or Pet Armour, which is actually just a generic version of Frontline, and is sold at Wal-mart and Sam’s Club for pretty cheap. There is also a product called Comfortis, it’s active ingredient is spinosad. It is a pill form and does not treat for ticks and MUST be given with food. Unfortunately it is only sold through a vet’s office. The feline equivalent of Comfortis is a topical method called Assurity and is made by the same company. There are also good brands of flea/tick spray, such as Ovitrol and Adam’s products (we use these at work even on puppies and kittens). I would not waste time with flea collars, powders or shampoos, they usually don’t work that great if at all. If you keep your dog on heartworm prevention, you can also go with combination products. Trifexis is a pill form of heartworm prevention that also does intestinal worms and fleas. Revolution is a topical method that does heartworms, fleas, ticks and sarcoptic mange (a.k.a. scabies). Your dog will need a heartworm test done first however before purchasing these products. Revolution also makes a topical formula for cats that does intestinal worms, fleas, ticks and ear mites and they do not need any prerequisite testing to get it. I hope this has been helpful and has shed some light on the situation. The maker’s of Hartz will eventually get what’s coming to them. As an animal professional, I feel it is my duty to educate as many people as possible about the ways to care for your pets, so please feel free to comment or leave questions on this post and I will do my best to answer them. My thoughts are with everyone and their beloved animals that we’re affected by this horrific line of products.