As the recent recalls on milk and eggs has shown, what you buy from the store may not be all that safe. And when you are depending on what is available at the store you might just have to do without as the empty shelves in the local grocery store attested to yesterday.
Yes there is a slight risk that we could develop salmonella or even ecol i from the eggs or dairy products we harvest here on our little ranch. But that risk is mitigated by knowing not only how the animals were treated and what they were fed, but how the eggs or milk were handled right up to consumption.