Life changing. I have a husky German shepherd mix and his hair is my worst nightmare. I got this tool last year and it has been a GOD SEND. I use it often 2x a year when he blows his coat and it has saved my life - cannot express this enough. The amount of undercoat it is able to get is incredible. He lets me do it- and it's easy to clean the fur out. If you have a dog that sheds YOU NEED THIS.