My rescue was a mess. He suffers with SEVERE seperation anxiety. He has busted through windows and doors...you name it, he broke it. I tried everything...crying, medicines, vet trips, training, more crying. THIS SHIRT WORKS. It was my last ditch effort...I was out of ideas and I never dreamed it would work. He still paces some and struggles with us leaving but he has improved 180% since we purchased this. Try this first and remember, they only act out because they love you. It will get better. Be patient and BUY THIS.