: 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.
Egg Laying and Hatching. When it's warm outside, maggots can emerge from eggs laid only eight to 20 hours earlier. Resembling tiny white worms, maggots eat from the site where they emerged for up to five days. Since flies often lay eggs inside garbage and recycling cans and other potential food sources, keep these receptacles covered and as clean as possible. Flies also lay eggs inside the wounds of animals -- both wild and domestic -- dead creatures and manure. Maggots to Pupae. After three to five days of feeding, maggots squirm up to 50 feet away from the hatching site to a dry area and begin to pupate. How long they remain in the pupal stage depends on the temperature.