I did make a successful claim on the Marshall Farms guarantee back in 1999. It was for a deaf ferret. I needed a vet's certificate stating that he was indeed defective aka deaf. Marshall gave me a choice of trading in the ferret or a credit for 1/2 his purchase price at the store where I purchased him. I used the credit for a bunch of ferret supplies that I donated to the local shelters through the ferret club I belong to. Hope this helps. Kristeen-NJ [Posted in FML issue 5133]