Very good product, and the dog eats these like treats. We are feeding these as a preventative, so I don't know how effective they are in preventing disease. But, the idea is to use them as prophylaxis, and not wait until the disease has manifested itself. I would recommend this product over others, since the dogs eat it with little or no encouragement.
Chews are dry and crumble, not moist at all. I have bought these chews for the last 7 years and in the past 10 months mostly all the chews I got are on the dry side or completely dry. I still give them to my dog but is still disappointing that you pay $90 for 240 dry/crumbly chews.