Domestic flies? This habit creates “triangle of pests” in your home

Domestic flies? This habit creates

Domestic flies can be a sign of bigger problems in the house. Find out what the bad habit is, though apparently harmless, but it can lead to the formation of a “triangle of pests” in your home.

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28/07/2026
by

Inês Morais Monteiro

Sand considers that finding a fly hovering through your kitchen it can be disturbing, imagine if you find that there is a large family of these insects among the foods that eat daily.

 

Although they do not have a very long life span, Jacob Cohn, COO and certified entomologist from Arrow Termite & Pest Control reveals to the blog Martha Stewart that “females can lay 75 to 150 eggs at once”, therefore explains the ease of few flies if they can “get into a problem quickly.”

You can enter through an open door or window, but what determines whether or not they stay are certain conditions.

Cleaning experts reveal to the same source that there is a bad habit that can help to develop “triangle of pests” in your home.

They are commonly known as “domestic fly”But don't think this species promises to solve your home problems, on the contrary! However, if you want to shut them down, you need to abandon this habit: Leave dishes unwashed.

How is the “pest triangle” developed?

These experts explain that the pests need “home, food and water to survive”, with the union between these three factors, the famous “triangle of pests” begins to exist.

By leaving the dirty dishes at night it provides this “perfect environment for these animals to thrive and become difficult to control infestations”, they add. 

By leaving the dishes dirty for a long time, instead of a dirty surface, it has several: “Pests can soil countertops, defecate in cabinets and urinate in cutlery,” says Stew Muir, technical security manager and entomologist at JP McHale Pest Management.

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