I used the product after adopting a shelter dog with kennel cough. The vet said to just wait it out, that's life at the shelter. The cough dissipated within one day and was gone within two. I added it to a little warmed up chicken broth and my dog lapped it up!
The use of the product was very easy. The smell was strong, but my cat ate it up once it was put in her food. My cat stopped sneezing almost right away and is doing great a week + after!