UV lights to detect urine?

dearlouise Forumite Posts: 354
Ninth Anniversary Combo Breaker
I am at my wit's end... can you help?

I watched a Youtube video showing a guy finding cat urine using a UV light. So I purchased one to find any rogue urine spots in my house (one of my cats suffers from stress related cystitis & so once or twice a year she sometimes 'spots' in places other than her tray).

The UV light arrived, nothing. I thought maybe I got it all up - excellent. The cat had an episode of cystitis after I moved house a couple of months ago, so thought brilliant, can find every spot with the UV light. Nothing. Even places I saw her spot...!!!

So I purchase a more expensive UV torch online... it arrived... still nothing.

This really ticked me off, so did more research online & found you need a specific wavelength to spot urine - apparently. So purchased one where the seller assured me was a lower wavelength. It arrived... nothing.

I have 3 UV lights (well 2, because the first went in the bin) & none of them work. Is this whole phenomenon a hoax? That you can't actually find urine using UV? Amazon reviews on products for this purpose sway from, oh my gosh amazing, it allowed me to clean & remove smells... through to it doesn't work.

Do you have any honest experience in this area???


  • Trina90
    Trina90 Forumite Posts: 540
    Seventh Anniversary 500 Posts
    We bought a torch one from PAH and it works. It doesn't show up really obviously but it does show. Do you make the room as dark as possible first?
    Mortgage started 2015: £150,000 2016: £130,000 2017: £116,000 2018: £105,000 2019: £88,000 2020: £69,000 2021: £51,195 2023: MORTGAGE FREE!
  • Carer
    Carer Forumite Posts: 296
    Part of the Furniture
    We have a striplight one, bought years ago for photo etching. Works brilliantly but you need complete darkness.

    Oh - and if you have men in the house, don't check the bathroom with it :eek:
  • Jojo_the_Tightfisted
    Jojo_the_Tightfisted Forumite Posts: 27,228
    Part of the Furniture 10,000 Posts Name Dropper Combo Breaker
    I used a child's secret handwriting pen toy, closed the curtains and switched the main light off.

    Behind the sofa and by the front door looked like an episode of CSI.
    I could dream to wide extremes, I could do or die: I could yawn and be withdrawn and watch the world go by.
    colinw wrote: »
    Yup you are officially Rock n Roll :D
This discussion has been closed.
Meet your Ambassadors


  • All Categories
  • 338.9K Banking & Borrowing
  • 248.7K Reduce Debt & Boost Income
  • 447.6K Spending & Discounts
  • 230.8K Work, Benefits & Business
  • 601K Mortgages, Homes & Bills
  • 171.1K Life & Family
  • 244.1K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 15.9K Discuss & Feedback
  • 15.1K Coronavirus Support Boards