There's variants where the light is in a location that is hard for insects to exit. I've seen 1) fan causing airflow that's hard to "fly upstream" in 2) funnel

There's variants where the light is in a location that is hard for insects to exit. I've seen 1) fan causing airflow that's hard to "fly upstream" in 2) funnel shapes that make entry easy, but finding the exit hard. These avoid the zap aspect, and use less power (LED and maybe fan).