This lamp emits a reddish light. It seems to work. I replace it with a 60w FEIT LED flashlight which seems to be slowly attracting more bugs over time. It didn't last very long compared to what they claim. about 2 years. Previously, I used Philips LED backlight, which emits a greenish-yellow light. They attract a lot of stink bugs. I had fluorescent insect repellent that still works (10 years) but the plastic cover has worn off in the sun. Instead of being invisible, she attracted many bugs. I hope this bulb will last a very long time compared to the Feit or Philips brands. Will be updated.