Samantha - The only difference in black lights for detecting rodent urine is the distance away from the urine you can shine the light in order to see the fluorescent urine; i.e.? the stronger the light, the farther away you can stand while black lighting.
Remember, all sorts of compounds fluoresce, so don't be fooled.? In order to detect the urine, the area must be very dark for the urine to "stand out".? Rodent urine usually shows up as "trails" and "puddles" of urine, especially with rats, because they tend to "leak urine" as they walk. Tom Parker -----Original Message----- From: samantha_rich...@nps.gov To: pestlist@museumpests.net Sent: Thu, Jul 30, 2009 7:30 pm Subject: [pestlist] UV lights for identifying rodent urine This is a message from the Pest Management Database List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Greetings-- I am looking for a UV light to help identify rodent entry points. I've found a wide variety of models ranging from LED-type flashlights to flourescent tubes, different wattages and types of batteries. . . a wide variety of claims as to which model is the most effective. A wide variety of prices too, from $20-200. Does anyone have experience with UV lights, and do the more expensive ones really work better? Thanks for your help. Samantha Richert Curator (SCEP) Pacific West - Cultural Resources 909 First Avenue Seattle, WA 98104 206-220-4130 ------------------------------------------------------------- To send an email to the list, send your msg to pestl...@museumpests.com To unsubscribe from this list send an email to imail...@zaks.net and in the body put: "unsubscribe pestlist" Any problems email l...@zaks.com