: 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 farmer. The process starts with temperature- and humidity- controlled rooms filled with millions of flies. These flies lay their eggs on to meat and fish that we provide for them. The eggs are transferred to our production factory for hatching and are then placed into concrete pits, where they are fed fish, chicken and turkey. It takes five to seven days to produce a fully grown maggot.