If streaks or smears are observed on vertical surfaces near cracks, what specific activity might this suggest regarding an American cockroach?

Answer

The cockroach has moved across the surface after consuming liquid or moist food

Smears or streaks, especially on vertical surfaces near cracks, indicate that an American cockroach has passed across that area immediately after consuming liquid or moist food.

If streaks or smears are observed on vertical surfaces near cracks, what specific activity might this suggest regarding an American cockroach?
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