This product is amazing. It should be called "The Rescuer For Pet Owners". No really, I love it's name. So happy I purchased the 2-pack. My 8 year old Doberman has been doing this since we rescued him when his family decided they didn't want him. I'm sure he was devestated. He thinks he's protecting our home I think. If any of us are ill he does it more. Much thanks. It's a life saver for me.