Termites almost always enter through a dirt filled porch or attached slab. The front entry serves as a great entry point for the termites to enter the home. The dirt fill comes right up to the sill plate and provides access to your framing members.
Before selling your home it is a good idea to have a termite and home inspection prior to listing in order to fix what is needed before the home goes on the market.
Eastern Termite 800-229-3472 www.easterntermitecontrol.com