4 ounces. Claims have been made that diatomaceous earth powder controls mites/fleas on hedgehogs. Please contact me for more information. You can sprinkle the powder on to your hedgehog starting at the top and moving down toward your hedgie's back. The powder is organic food grade, so you don't have to worry about your hedgehog ingesting it. It is very important that your hedgehog is completely dry. Sprinkling the powder on a wet hedgehog will simply get muddy and will not be able to do it's job.
Ingredients: Organic Diatomaceous Earth