Maine Pesticide Structural Licensing Practice Test

The correct option is associated with the use of black light as a valuable tool for detecting house mouse activity, particularly through the fluorescence of their urine. When exposed to ultraviolet (UV) light, such as that emitted by a black light, certain substances can fluoresce, making them visible in the dark. Mouse urine contains compounds that can fluoresce under UV light, allowing pest control professionals to easily detect signs of mouse presence even in areas not readily visible or accessible to the human eye.

Using black light in monitoring for mice offers several advantages, such as being non-invasive and allowing for quick identification of rodent activity. It can reveal not only urine trails but also droppings and possibly other signs of infestation.

Other lighting options do not produce the same effect on mouse urine. Infrared light, for example, is more suited for heat detection rather than fluorescence and does not reveal mouse presence in the same manner. LED lights and fluorescent lights do not emit the specific wavelengths needed for the compounds in mouse urine to fluoresce, thus making black light the most effective option for this particular application.