: an act of showing someone how something is used or done : demonstration. 1  I saw a demo on how to use the computer program. 2  The salesman gave us a demo of the vacuum cleaner, and it seemed to work very well. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 3
If however, you are talking about some maggots in a bowl of wet food (either canned food or dry food which got wet or which you deliberately added fluid to) it is a different matter. Maggots come from flies eggs and they take some set period of time to hatch from the eggs.
A female blowfly lays up to 300 eggs at one time, and with numerous females visiting a corpse, the number of maggots can be immense. For example, 48,562 maggots were found on a 156 g piece of meat after 24 hours exposure. However, because this was insufficient food to sustain them, only 231 flies finally emerged. In warm weather, conducive to fly growth, maggots can consume 60 per cent of a human body in less than a week.