I have have been brushing my rescue dog's teeth daily since I adopted her 14 months ago. I used a different brand at first but my dog really disliked it. I switched to this brand two months ago and although she still doesn't enjoy getting her teeth brushed, she doesn't run away like she did with the other brand.When the vet first examined her shortly after adoption, he remarked that she had some calculus on her back teeth and that the only way it would come off was with a professional cleaning. However, he felt that we could wait another year or two for the cleaning.Today I noticed that the calculus was greatly reduced on her back teeth. I believe it was due to this toothpaste. I used the other brand for one year and there was no improvement--I used this brand for 2 months (rotisserie chicken flavor, although I think it smells minty) and there was a noticeable difference.I regret not taking a before photo to show the vet. Hopefully my dog's teeth will sparkle at her next checkup.