UV leak detector for my AC in my car. Please help???

Question

IT's the one with the UV penlight. however, the light doesn't seem to light up urine or the security slip in a $20. Does it need batteries?

Answer 1

you can go buy a cheap blacklight from spencers and use that with an extension cord they always work, but sounds like your light is cheap and not bright enough try changing the battery if no help then buy a cheap blacklight they work just kinda big.