I've spent my life in a vegtable gardens with cow manure. Are you talking about composted manure, Scottm? Yes, that's far safer to handle than raw manure but to call it "sanitary" is is quite reckless and rather uninformed - sorry but someone could get seriously sick here. Ask a farm boy how they handle their fertilizers - natural and synthetic. VERY CAREFULLY. Any mechanical distribution is usually done in a full "bunny suit".
As for manure that has not composted, that's plain old foolish. Not to mention if someone's child or pet come in contact with that. It would be no different than untreated sewage. Saw what happened in New Orleans, right? Just trying to save someone from a serious infection, that's all.
When I handle manure (composted only) I keep it low and slow to minimize airborne particles and I wet it down after mixing with soil for the same reason. I then close off my fences so pets and children don't make contact and then, I scrub myself to the shoulder aggressively with soap and water.
The pathogens Salmonella, Listeria & E-coli, as well as parasites, such as roundworms and tapeworms, have been linked to applications of manure to gardens (see the Green-Line). Not to mention dysentery. So please, manure in ANY form is not sanitary and careful considerations need to be applied when considering its use.