The answer to 'why is my termite trails' is that termite trails, also known as mud tubes, are a common sign of an active termite infestation. Termites build these mud tubes to travel from their nests to food sources, like the wood in your home. Termites need moisture to survive, so they construct these mud tunnels to protect themselves from drying out as they move around.
Seeing termite trails is a clear indication that you have a termite problem that needs to be addressed. Ignoring termite trails can lead to significant structural damage over time, so it's important to take action as soon as you notice them.