I use it too. I picked up a 30 lb bag at the last show from one of the shelter. However if you contact Zupreem by e-mail they will send you retailer that handle it (both local and Internet). Just go to their web-site and click on contact us. Our local Petsmart carries it, but it's expensive. On-line Ferret Depot seems to have the best deals. Hope this helps Joy and her foursome. [Posted in FML issue 4878]