The UV Blacklight at night REALLY WORKS. The hornworms glow bright yellow-green on the dark stems. It may be that the person who tried it and failed did not have the right kind of light. I used a UV fluorescent tube in a desk lamp, on a long extension cord, to make the worms glow before they were picked off to their doom. One day I found 6-7 worms on my tomato plants, after seeing the missing leaves and black droppings. That night, with the blacklight, I found about 40 more. Please try it. It works!
The UV Blacklight at night REALLY WORKS. The hornworms glow bright yellow-green on the dark stems. It may be that the person who tried it and failed did not have the right kind of light. I used a UV fluorescent tube in a desk lamp, on a long extension cord, to make the worms glow before they were picked off to their doom. One day I found 6-7 worms on my tomato plants, after seeing the missing leaves and black droppings. That night, with the blacklight, I found about 40 more. Please try it. It works!