What do you think when flies are present in your environment?

^{Flies, are one type of insect that are often a nuisance in human life, but flies are also the main object in decomposing waste in the human environment as well, having disadvantages and also having other advantages on different sides, namely groups of flies.}

^{(The house fly (Musca domestica) is a fly from the suborder Cyclorrhapha)}

This domestic fly or often referred to as a house fly, is one of the fly species that is often present in the human environment, it will be present when food residue is left behind in every human activity, indeed it has a bad side in terms of health, but their occurrence has a useful side also in the field of decomposing waste, and several other things that are dirty.

Today, I met him again at a banquet at an event at one of the dining tables, as an activity for the invitees, this house fly looks clean in all its conditions, looks clean with all the feathers, its wings are transparent, maybe in the initial location of its existence, wet with rainwater. So it looks like his body is not polluted by anything bad, however flies are still flies, they still like dirty locations. His presence here, is predicted to find the smell of leftover food, which has just been cleaned, so he appears with a passionate ambition, to master a small object (food scraps).

^{His presence here tells us that the landing site is still dirty, even though it has been cleaned}

At first glance this table looks shiny and clean, it is known that the situation has just been cleaned in every round-trip activity and leaves invited guests, if it is said to be clean why are flies still coming and being present in this small location, this indicates that in that location there are still leftovers of food which is not completely swept away with a cleaning tool, so that the remnants of the aroma of the food are still sniffed by the fly's antennae.

In general, the sense of smell of flies is very sharp when compared to some other species, so the acuity of the sense of smell is often used as an important tool in missions to find hidden situations, so forensic teams often use it as samples contained in flies, on body parts. Although flies are not one of the bioindicators, like dragonflies in detecting water capacity, flies are often used as a tracking tool for an important object that is lost and covered by something unusual.

So, based on the brief explanation above, it can be said that the presence of flies in a place is a reminder that the location is still dirty and not perfectly clean. This is evidenced by a banquet table that has been cleaned, with several cleaning tools, but on some sides of the table there are still food remnants that have not been touched by the cleaning tools.

This, it seems that this one house fly character, he dominates the side of the banquet table, and he doesn't fully explore the whole table, what he explores is the side table side. The size of the detector and the fit in the side of the table is visible with a percentage of only 5%, meaning, the table is clean about 95%.

On the table, it seems that there are no food scraps, but what is left is the aroma of the leftovers itself, this is where the sharpness of the sense of smell in detecting a food object, whether the food has not gone stale or the food has undergone physical changes or has rotted, then if the food has rotted, then the aroma is very clearly smelled and detected by flies.

Moreover, if there is a large pile of garbage coupled with a stale rotten smell, then this is the nest where they breed, then make new births in every bad condition, then the garbage becomes the main nest of flies.

Slight odors (though not rotten) can be detected by the sense of smell, especially the stench that comes from carcasses, both large and small carcasses, so it is very easy for flies to detect the presence of an odor, so by detecting the odor, the source will be seen. Even if an inanimate object or something contaminated sticks to every other part of the animal's body.

So what we need to know, its presence is not only seen from the negative side, but also responds with a positive attitude, meaning that when you see the presence of flies in your environment, you state that the location is not clean, either from leftover food, or there is still a smell. It can simply be said that the site is still contaminated, and you need to clean it again thoroughly.

Hopefully you enjoy it and become a scientific insight, hopefully....