In Switzerland three species of insect are approved as foodstuffs: the mealworms, the cricket and the migratory locust. They may be sold whole, chopped or ground. Before insects are retailed they must be deep-frozen and additionally undergo heat or some other form of treatment to ensure they don't contain harmful germs.
Switzerland is taking a pioneering role in Europe when it comes to selling insects as food. So far the EU hasn't approved insects for sale as foodstuffs. It's quite a different matter in Asia, Africa and Latin America, where people have been eating insects since time immemorial – and not just out of desperation, but because they're nutritious and taste good.