: 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.
Maggot farmers sell their crops for use in forensic labs, fishing bait, and even compost and waste management. Farming maggots for sale requires more effort than simply delivering rotted meat meals to the tiny hungry mouths; in fact, maggot farming is a full time job.