Unfortantly that is true about excluding all parts of the animal. I think that is silly because both Mad Cow & CWD are said to be in the brain and bone structure (spine) area of the animals. If this is not true, then why do all the government agencies promote those facts on their sites. I can see banning heads & bone structure from effected areas (CWD & Madcow). But CWD is more of a problem in the USA than in Canada. DeBoned meat is not threat to humans acording to USA State sites acording to data on CWD. I wished all governments would make up their minds and stop sending out confusing information. Either it is a threat or it is not !!!!!!