By pestman | 28-01-2026
Besides cockroaches, spiders or mosquitoes, moth flies are a common small animal in the bathroom that once they appear, there are usually many of them, making people extremely uncomfortable. They not only cause loss of aesthetics and annoyance but can also greatly affect human health.

Moth flies
Characteristics of moth flies
Compared to mosquitoes, moth flies are shorter and rounder, especially the whole body is slightly gray and hairy, with stiff wings and looking like a moth. Their ideal habitat is wet places, drains, drainage ditches, toilets, septic tanks, storage tanks... and places with low oxygen environments with the most active time being at night.
In fact, the flying ability of this insect is very poor, even if waving hands or splashing water to drive them away, they will always be unable to fly, sometimes even being splattered and falling straight to the floor. Many people are curious and annoyed, using their hands to destroy them, but this is highly discouraged, even dangerous.
Because of the characteristics of growing from dirty places, the body of moth flies easily hides dirt and countless unclear types of bacteria, in addition to dirtying your hands, the dirt on their bodies can cause health and physical problems for you...

Characteristics of moth flies
In summary, although this species does not bite or sting like mosquitoes, they bring a feeling of discomfort when flying, perching on walls, faucets, bathtubs, sinks, in the toilet or clinging onto light bulbs. But no matter how annoying, we also need to note not to use hands directly to touch to drive away or destroy them to avoid unfortunate harmful effects that may occur.
>> Read more: Proper fly identification for effective root-cause treatment
Ways to drive away and kill moth flies safely
Instead of letting moth flies appear and then finding ways to destroy them, we should proactively prevent them first by the following ways:
– Use a cover to cover the drain mouth, this action is both to prevent bad odors from the drain. Limit clogged drains and help moth flies have no way to get to the toilet.

Ways to drive away and kill moth flies safely
– Clean regularly regularly, use disinfectant floor cleaner with a scent to repel flies and mosquitoes. Remember, always keep the toilet dry, do not allow stagnant water to appear.
– Create a ventilated environment not to let moth flies have breeding conditions around the house, clean places like garbage dumps, manholes...
– Besides, to be able to destroy moth flies completely, please refer to the effective measures below:
1. Cleanly destroy moth fly larvae in the drain
Cleanly destroying the larvae of moth flies is a way to prevent them from growing and developing in numbers inside their own housing. You can do this by using a formulation containing active insecticidal ingredients, mixed with water and then poured into the indoor drainage system.

Cleanly destroying the larvae of moth flies
The main habitat of moth fly larvae is under the drain, so this action will kill all these types of larvae very effectively. After that, you can clean the indoor drainage system, not letting water stagnation occur, which is a good condition for the mother fly to continue laying eggs.
After treating the larvae in the housing, at this time you should continue to check around the house, clean up wet places, waste piles... need to create a ventilated environment, eliminate the suitable environment for moth flies to lay eggs and grow.
2. Destroy adult moth flies perching on toilet walls
Performing the destruction of adult moth flies is not too difficult, you can rely on their food preferences to set traps, both easy to do and very safe, can be completely destroyed in just a few days.

Destroy adult moth flies perching on toilet walls
If your family has young children and is reluctant to use chemicals, take a moderate piece of cardboard, spread a relatively thick layer of cooking oil on it enough to retain the flies when they land on it. The smell of cooking oil will attract adult flies to come, when stuck they will not be able to escape and die right on it. Please note to place the cardboard trap in areas near the kitchen, toilet or positions where moth flies often appear such as near drains. This will help destroy moth flies faster.
3. Destroy adult moth flies on the walls of bedrooms, living rooms
For bedrooms and living rooms, you can use some safe and low-toxic mosquito killers to spray in the room. This will temporarily kill the flies that are causing discomfort to you and your loved ones.
In addition, to completely destroy moth flies in bedrooms and living rooms, you should also regularly clean under cabinets, under beds, corner positions of the house that are leaking or wet because this is the favorite habitat of moth flies. Trash cans or waste storage places are also proliferating positions of moth flies.
>> Learn more: Effective, safe, and fast root-cause insect control methods
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