There are 2 types of termites. Normally droppings are more indicative of the drywood termite. Their fecal pellets are unique in that they are very sand like in consistency but even more uniform in size and shape than sand. They are so hard and dry that they cannot be crushed when placed in the palm of your hand and vigorously rubbed with your other thumb. The color will vary from light to dark earth tones depending on the wood they have eaten.