This is truly a success story for my pup, Sammie, who is a pit/lab mix. My husband I had noticed that Sammie was spacing off and “fly biting” out of the blue one day. After much research, I saw a testimonial for Canna-Pet and I thought I would give it a try before taking her to the vet and having them prescribe an artificial drug. After about a week of two doses a day, we noticed that nearly all the episodes of fly biting had gone away. Now, after a month, she has had maybe two episodes, versus the two time daily episodes. We are very happy with the product and have noticed no side affects. We will definitely keep using this product.