: 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.
It takes about 10-14 days for a newly hatched maggot to complete it's life cycle and turn into a fly.ithin a day, larvae (maggots) hatch from the eggs; they live and feed on (usually dead and decaying) organic material, such â¦ as garbage or feces. They are pale-whitish, 3-9 mm long, thinner at the mouth end, and have no legs. They live at least one week.