Second, how sure can I be about the background of the meat and dairy products that I consume? When I am at home I can buy meat from a local butcher who sources cattle and sheep from my own area, slaughtered on his own premises under careful control. I have visited local dairy farms where the cattle seem more contented than many humans. But what about when I am away from home? If I'm eating in a restaurant or visiting friends, where did they buy their animal products? While it's possible to check up on these details, it isn't easy to do so.