We started using this several years ago for our Irish Setter that had separation anxiety. It worked very well for him, so when our Lab became nervous during thunder storms, we gave it to her and it worked for that, too. We have four large dogs and three of them have various anxiety issues, so we are never without this product on the shelf. They all love them and if we need to give some to one, everyone lines up begging for them… The thing that amazes me is that our Lab\'s storm phobia has actually subsided sharply since using this product... Please don\'t change this product! It is perfect as it is!