Critical Care is another supplement that can be used for chins who are not eating for any reason, and unlike Nutri-Cal it is specially formulated for herbivores.

Directions on administrating Critical Care from OxbowHay.com:

“Mix one part dry powder to 1.5 parts warm water. Various methods of administration may require more water to be added. Feed 50 cc of mixed product per kilogram of body weight, divided between 4-6 feedings per day, to any herbivorous mammal or reptile.

Refrigerate any unused portion after mixing and use within 24 hours. Best results are achieved when small amounts are mixed at the time of each feeding. ”

Some other options would be to add dyne to the mix, and to use apple juice instead of water.

Never try to force feed anything to your chinchillas as it could easily make them choke. If your animal is not eating and losing weight, always take it to the vet, as not eating is usually a sign of more serious illnesses.