Like Amber said, if you use the black light you may be in for a surprise. Dogs leave behind urine all over the house, even the well trained ones that do use the bathroom inside. The dogs still have urine inside their tract even when they have used the restroom and every dog excretes a little bit with various every day activities. Not all of it may get on your carpet, but when they lay in their beds, your bed, couch, etc, it gets rubbed against furniture and carpets. It's inevitable, and it's something that a pet owner has to come to terms with (even more so for a pet sitter!)
Dogs leave behind their scent or 'mark' in may different ways and not only through urine. So just because a dog is paying attention to a particular spot doesn't necessarily mean someone had an accident there. If you think about the thousands of places we've been, and the thousands of things we have stepped in (majority of the time without knowing) we track all of that inside our home every day, and so do our pets. Just like you have to tell your kids to not put money in their mouth because that quarter has probably been in thousands of pockets, wallets, hands, and who knows what else. The same thing goes for us and our pets. Which is one of the main reasons why we do not wear shoes in our home. This is a bit of an odd topic for me when I have meet and greets in my home. I'll kindly let them know they can leave their shoes by the shoe rack (we have a tower rack that houses all of our shoes, since we strongly believe in no outdoor shoes in the home), and sometimes they kindly deny and say that they'll leave them on. Then what? I understand that not everyone is used to the same customs that my family and I are, but the fact of the matter is, you're in my home, and you have to respect it. I always feel awkward requesting for them to take their shoes off, though no one has ever objected a second time. I would never dare wear my shoes in someone else's home, and I've had some strange stares from others when they see that I have removed my shoes. Who knows! All I know is, I'd never disrespect someone's home by dragging my dirty 'though clean' shoes in their home.
I went off topic a little, but we drag stuff into our homes every day. Point blank! So I am always very good about constantly cleaning on a regular basis. Dogs mark to distinguish territory, but it doesn't always have to be over pee or poop. It can be anything they're trying to mask with their scent. I place baking soda on my carpets once or twice a week, let ... (more)
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