Your right...it does have animal feed instruction. I missed that photo when I first opened the thread. Weird...I just checked my DE bag label and it does NOT contain silica. It has DE and a form of clay. I thought the silica was the problem with non-food grade DE.
OK...just looked up...
That is the stuff you use in pool filters. It is toxic. It should have a picture of animals on it, include a line about adding 2% to animal feed or specifically say FOOD GRADE.