Can a few coins with water in a plastic bag really drive away flies?

A few coins filled with water in a plastic bag can really drive away flies.

When plastic bags are filled with water, light will be refracted. Plastic bags are not regular objects, so the refracted light will be messy. After adding coins, the refraction will be enhanced, and the unevenness of the coin surface will also aggravate the confusion of light. This chaotic light will enter the fly's eyes, just like watching a disco ball, which will make the fly dizzy and upset.

In this environment, they will feel more vulnerable and leave this environment.

Extended data:

Other ways to control flies: The accumulated kitchen waste contains rich nutrients and sufficient moisture, which provides good environmental conditions for the growth of flies. So flies should be killed at the source. The garbage can in the restaurant should be sealed with a lid, and the garbage should be cleaned every day, so as not to give flies the opportunity to lay eggs; Kitchen garbage trucks should be cleaned in time and disinfected regularly.