[qooleot]

"This raises an important question, which is, who was using that wheat that the FDA considers unfit for human consumption? I worry that my dog is eating a lot of vomitoxin."

From Wikipedia:

Vomitoxin is not a known carcinogen as with aflatoxin. Large amounts of grain with vomitoxin would have to be consumed to pose a health risk to humans.

Companion animals: Dogs and cats are restricted to 5 ppm and of grains and grain byproducts and the grains are not to exceed 40% percent of the diet.

[douche]

Simple answer, buy the more expensive dog food. I spend roughly $50/50lb per bag of 0-grain feed that I give my dog. This lasts 2-3 months for a 40-50 lb dog.

[scoot]

Completely OT, but holy $#!+ that's cheap! I pay $2.50 a lb (GBP45 for a 12kg bag) for dog food that is only 20% meat / meat derivatives, and includes grain. It's far from the most expensive but it's the best I have found at that price.