: 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.
The first thing you should do to get rid of maggots is remove all food sources. This means the trash, the dead animal or other rotting material. One of the best poisons for maggot is permethrin. Permethrin kills maggots and any other insects on contact. This synthetic chemical is a neurotoxin that works by disabling the neuron membranes.