bug light

‘Because what, we threaten to burn his mother like a mosquito on a bug light?’ Terry couldn’t believe the words he was hearing himself say. No wonder he was drinking on the job. Look at the kind of discussion he was being forced to have.
Source: Sleeping Beauties by Stephen & Owen King
Context: Terry is the new acting Sheriff and Frank is his appointed deputy. Frank is suggesting to Terry to take Lila hostage to threaten her husband.

What does the bolded collocation mean?

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A "bug light" – usually for mosquitoes – is a bluish light behind an electrified screen. The mosquitoes are attracted to the light and are electrocuted when they fly into the screen.

They're also called "bug zappers".

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