Although not a primary indicator of the presence of termites in your home, checking your property for features that can harbor termites will definitely be on an exterminator's checklist.
Wood fencing adjacent to your house -- The idea here is that termites can find the wood fence, start using it as a food source and follow it like a big welcome sign right into your home.
Wood mulch within 4 to 6 inches of your home's foundation -- Wood mulch is -- well, wood. Termites can eat it. They can also use it as a protective, moist cover as they munch their way ever closer to your house. Termites can't smell wood. When they bump into it, though, they follow where it leads.
Firewood -- That big pile of winter firewood may invite termites to picnic in your backyard. That doesn't necessarily mean you can't keep wood on your property. To discourage termites, store wood off the ground, and keep the pile at least 20 feet from your home.
Deadwood -- Fallen tree limbs are part of nature, and removing them is good property maintenance. Just because tree branches are natural in the environment doesn't mean they get a pass from termites. Round up dead wood and discard it.
Wooden structures -- Termite-resistant wood products are often used in the construction of outdoor structures like decks, arbors, playsets and sheds. If you have wooden improvements on your property that aren't made from termite-resistant materials like pressure-treated wood, they may be vulnerable to termite damage now or in the future.