Our dog is 6 years old and we have been giving her the NuVet Labs K-9 Wafers for around 5 years. My dog responds really well to the supplements, she really loves them and thinks they are treats. The ordering process is easy and at this point, we are on an auto-ship plan so we don't even have to worry about remembering to order every couple of months. The pricing is fair and it's a good value. I highly recommend them to others!