What if there has been rain? Does that wash away the scent?
Any kind of moisture and cool temperature is great to keep the scent around for much longer and slow its decomposition. In rain, morning dew and moisture like fog, the scent sticks to everything like cracks and sidewalk and planter edges. Hot and windy temperatures are the hardest on scent. This speeds up decomposition and forces the scent in a wider area for the dog to follow. A dog can still track in this area, but I believe that only an experienced dog trained in these types of situations should be used. This is not an environment for a beginner dog.
