My dog has fleas! I used Hartz Mountain flea shampoo first treated my carpet with powder and bought a Hartz Mountain flea coller. All was fine for two days, then they were back. I found fleas crawling on my dog's neck right next to the new flea collar. These products suck! People are being ripped off because the watch dogs are asleep or being paid off to turn their heads. This is typical of many products today. If you want good results do your homework and spend the money on something that works! In my opinion Hartz Mountain is cheap and doesn't work!