Mosquitoes can detect UV light from a distance of 100 ft. However, UV bulbs do dim over time becoming less effective and should be replaced every year.
NB: The UV light wavelength is different to that emitted by the UV LED lights.
Pro 900 Series Ultra/Premier XC Traps and 800 Series Ultra/Premier Traps incorporate a low intensity UV bulb which emits light at a frequency our research has show to attract certain mosquito species. However, it can also attract small quantities of non-target species like moths.
If this is a problem the UV bulb can either be taken out (800 Series Premier) or switched off (800 & Pro 900 Series Ultra/Premier XC) by touching the UV Tube button.