I have used the NuVet Plus K-9 Wafers for two of my dogs, one started when she was 5 and lived until she was 16. My cocker spaniel has been eating them since she was a puppy and now she is 8. I really think they make a difference in the well-being of my dog and it's so much more cost effective to keep her healthy. I can give her the wafer right out of my hand and don't have to trick her into eating them. I almost never have the need to speak with NuVet over the phone but when I do the customer service people are just so smooth to deal with and very personable. I highly recommend them!