Why the soil under a New Jersey house belongs in the conversation
A liquid termite treatment is not a coating on the outside of your foundation. It is a band of treated soil, and soil is not the same everywhere in this state. Heavier, denser ground holds the product where it was placed. Water moves slowly, the treated zone stays where the technician put it, and the barrier tends toward the long end of its expected life. Sandier, more permeable soil behaves differently. Water moves through faster, which affects both the initial distribution and how the zone holds up over years. That is one reason the University of Florida range for soil treatments is so wide, running from two years to fifteen or more. A high water table adds a second issue, because saturated ground limits how deep a trench can usefully go. None of this rules out liquid work near the coast, and plenty of shore homes are treated that way successfully. What it means is that soil should be a topic in the conversation, and a company that has never mentioned it is quoting from a template.
Crawlspaces, shore construction, and what to check underneath
A good share of the housing in New Jersey sits on a crawlspace rather than a full basement, and shore-area homes in particular are often built with limited clearance over damp ground. That space is where an inspection earns its money. The inspector should go under with a light and a probe, checking every pier and the interior face of the foundation wall for tubes, sounding the sill plate and band joist around the perimeter, and looking hard at the framing beneath bathrooms and kitchens. The condition of the space matters as much as the findings. Bare soil with no vapor barrier keeps ground moisture in the air and in the wood above it. Blocked vents do the same. Standing water after a storm tells you where drainage fails. Before the visit, clear whatever is stored down there. Stacked lumber and soaked cardboard are food, cover and a blindfold at once. Ask for photos from underneath. Nobody follows the technician into a crawlspace, and photos make the report checkable later.
The New Jersey termite year
December through February is the quiet stretch above ground. Surface soil freezes in the northern counties, foraging drops back, and feeding continues below frost depth and inside heated space. March through May is swarm season, arriving earlier along the coastal plain than in the northwest hills. Warm afternoons following rain trigger flights, and swarmers reaching an interior sill are the finding worth acting on. June through September is peak foraging. With about 48 inches of precipitation a year, soil stays damp and shelter tubes are built and rebuilt. Fresh tubes are easiest to spot in this window, which makes it the best time for a homeowner walkaround. October and November are practical months for treatment, since the ground is still workable and getting a barrier in before winter means it is ready when spring activity resumes. A simple rhythm works: look in spring when swarms and tubes appear, and schedule work in late summer or fall when soil conditions cooperate.
What actually happens on the first visit
In New Jersey the first appointment is an inspection, and it should take real time rather than ten minutes and a price. Outside, expect a full walk of the perimeter with attention to the joint where grade meets the foundation, stoops and porches poured against the house, and any wood in soil contact such as deck posts, fence sections and bulkhead framing. Inside, the inspector works the basement or crawlspace with a light and probe: sill plate, band joist, girder and its posts, joist ends in wall pockets, and the base of the stairs. Then a pass through living space, checking baseboards on exterior walls, window sills for shed wings, and any spot where a slab meets framing. You should end up with a written report naming what was found, where, a diagram, a proposed method, and an explicit list of areas that could not be reached. Two questions before they leave: what exactly did you find, and what would change your recommendation.
Comparing a bait plan and a liquid barrier over five years
The first invoice is the wrong number to compare, because the two methods spend money on different schedules. A liquid barrier is front-loaded. You pay once for trenching, drilling and product, and the treated zone works without further spending. University of Kentucky puts the labeled expectation at a minimum of five years, so the cost per protected year drops the longer it holds. A bait system is back-loaded. Installation is usually a smaller number, followed by a recurring service charge, and the protection continues only while stations keep being serviced. University of Florida is explicit that bait protection depends on maintenance. So the useful exercise is to price five years of each, including reinspections on the liquid side and renewals on the bait side. Then weigh the non-price factors: soil type, how much of the perimeter is reachable, whether you want your beds trenched, and whether continuous monitoring has value on a property that has had termites before.