That is a great question. I guess when your hungry you just keep right at it until you find the food. Termites just keep searching 24/7/365 until they find a food source. What does a termite issue look like? They build mud tubes similar to the picture, this one is unique because it was lengthy. But if you find something like this call your Professional Termite Company and/or ProBest Pest Management at 480-831-9328