How do flies eat?

House flies taste with their feet.

Flies will eat virtually anything. Most flies have taste buds on their feet, which are 10 million times more sensitive to sugar than taste buds on the human tongue. They do not have teeth but their mouths absorb food like a sponge. They can only eat liquids, but they can turn many solid foods into a liquid through 'spitting' on it. Their tongues are shaped like straws so they can suck up their food.