Yes, you read that correctly. A while back I purchased a blacklight flashlight to find dried dog urine in our house. Why? Because when you have two young puppies it’s not uncommon to identify the smell of urine but to not be able to find the source…
They’ve grown a good bit since I originally purchased it and it’s less of an issue now. That’s not to imply that they don’t “go” in the house anymore but it’s not as frequent and also less likely that we won’t notice.
There was a time, however, when they would frequently sneak off and piss in a corner or under a table and we wouldn’t notice it for a while. On wooden floors can be difficulty to see after it has dried.
Does this work? The short is answer is that yes, it does.