Hey, Wellshire Farms put up a great response to the itty bit of gluten that's been found in their Dino Bites (scroll down to "Quality Control"). Best explanation:
"Our Wellshire products are tested at a level of 200 ppm or less, which is equivalent to 99.98% gluten free. The FDA is now considering a new proposal that would reduce the amount of gluten to be 20 ppm or to 99.998% gluten free. This will be difficult to achieve as wheat and other grains can become cross contaminated from growth in the fields, or milling in the combines. It becomes very, very difficult if not impossible to control."
Now that ain't bad. Let's hope they can do it!