Any place where wood is in contact with the soil, like wood trellises connected to the house; where there’s a water source (such as leaky pipes), like in the basement or behind walls; or where there’s structural damage, like cracks in the concrete or in the floors. Check the outside of your home for termite trails–mud tubes 1/4- to 1-inch wide. Look carefully at nearby trees for mud trails which are sometimes more evident after a rain; check for mud deposited well above ground in tree branch notches or in branch stubs. These signs could be evidence of termites lurking in the trees that could also infest your house.