I have a 4month old Husky/Pit. He was a extremely active dog, sweet. I found out he had worms after looking at his poop. I went to Walmart to purchase this Dewormer, used it when i got home, the next day my dog was extremely ill. He was throwing up constantly, not eating/drinking, lethargy. Had to goto the vet to get some meds because he was dehydrated, purchasing this crap 4 dollar dewormer from Hartz has now caused me to spend 300 dollars on a vet bill, if these meds don’t work i will have to proceed to x rays and blood work following a hospitalization coming out to a total of $1,200. Hartz products is definitely not the way to go.