I went fishing and came back and my poor puppy was in need of some love. He was soo dirty though as he would roll in the dirt and throw himself pincones to stay busy. He too was ready for a bath when we got home. And he turned my water black! That white and tan puppy was all gray and black. his front line worked great though the tick that we found in his fur was dead and not bit on. It is good to know it works!