Termite traps, more accurately called termite bait stations, are plastic cylinders installed in the ground around your home’s perimeter to detect and kill subterranean termite colonies. They work by luring foraging termites to a food source laced with a slow-acting chemical that the termites carry back to the colony, eventually wiping it out. Bait stations are one of two main approaches to termite control, the other being liquid soil treatments, and they’re particularly useful for ongoing monitoring and for situations where chemical barriers aren’t practical.
How Termite Bait Stations Work
Subterranean termites constantly send workers out through underground tunnels searching for wood and cellulose to eat. Bait stations exploit this behavior. A hollow plastic housing is buried flush with the soil surface near your foundation, and inside it sits some form of cellulose material, essentially termite food. When foraging workers stumble across the station, they begin feeding and recruit other colony members to the new food source.
The key to colony elimination is the active ingredient mixed into the bait. Professional systems use insect growth regulators that prevent termites from completing their molting process. Because termites must shed their exoskeletons to grow, blocking this process is lethal, but it works slowly enough that contaminated workers return to the colony and spread the chemical through normal feeding and grooming. Over weeks to months, the entire colony collapses. This slow-kill approach is intentional: if termites died immediately at the station, the colony would simply avoid it.
Monitoring Stations vs. Active Bait
Not all bait stations contain poison from day one. Many systems use a two-phase approach: monitoring first, then baiting once termites are confirmed.
In the monitoring phase, stations contain untreated wood strips or compressed cellulose cartridges. These “interceptors” are checked on a regular schedule. If a technician opens a station and finds live termites feeding on the monitor, they swap in or add a cartridge containing the active bait. The Exterra system, for example, starts with cellulose interceptors and only introduces its bait matrix after termite activity is confirmed. Trelona ATBS takes a similar approach, starting with a grooved wood cylinder and a cellulose monitoring insert, then adding a bait cartridge on top once termites show up.
The alternative is pre-baited stations that contain the active chemical from the moment they go in the ground. The Sentricon Always Active system works this way, skipping the monitoring-only phase entirely. The advantage is simplicity: there’s no window of time where termites could be active but the poison isn’t yet in place. The tradeoff is that you’re deploying chemical from the start whether termites are present or not, and the bait cartridges need periodic replacement regardless of activity.
Where and How Stations Are Placed
Bait stations are installed around the full perimeter of your home, typically spaced 10 to 20 feet apart. They’re placed about 2 to 3 feet from the foundation, close enough that foraging termites heading toward your house are likely to encounter them. High-risk areas get closer spacing: near known moisture problems, around bath traps, beside wooden porches or decks, near tree stumps, and anywhere termite activity has been spotted before.
Each station sits in a hole deep enough that the top is flush with the ground surface, making them unobtrusive in your yard. A locking cap keeps out debris, rainwater, and curious animals. A typical home might have 15 to 25 stations depending on the size of the foundation and lot. Stations also get placed near potential entry points that aren’t along the foundation, such as fence posts or woodpiles close to the house.
Inspection and Maintenance Schedule
Bait stations are not a set-and-forget solution. Professional systems require regular inspections, typically quarterly, though some companies check more frequently during peak termite season (spring and summer in most of the U.S.). During each visit, a technician opens every station, checks for termite activity, replaces consumed or degraded bait, and clears out any dirt or root intrusion.
This ongoing maintenance is what makes bait stations effective as long-term protection rather than just a one-time treatment. It’s also what makes them a recurring expense. Most professional contracts run annually and include all inspections, bait replacements, and a damage warranty. If you stop paying for the service, the stations eventually become useless as the bait degrades and nobody is checking them.
DIY Bait Stations vs. Professional Systems
You can buy termite bait stations at hardware stores and online. Products like Spectracide Terminate and other consumer-grade options are designed for homeowner installation. They’re significantly cheaper upfront than professional systems, often costing under $100 for a set of stations to ring a small home.
The gap between DIY and professional systems is real, though. Professional-grade baits use more potent active ingredients and are formulated to remain attractive and effective in the ground for longer periods. Consumer products generally use less concentrated formulations. More importantly, professional systems come with trained eyes on a schedule. A pest control technician knows what termite activity looks like in a station, can distinguish termite damage from ant or beetle activity, and adjusts placement based on what they find. If you install DIY stations and never check them, or check them but don’t recognize early signs of feeding, you’re essentially just putting plastic tubes in your yard.
DIY stations can work as an early warning system if you’re diligent about checking them every two to three months and understand what you’re looking at. But for actual colony elimination and home protection with a guarantee behind it, professional systems are considerably more reliable. Many pest control companies also won’t honor a termite bond or warranty if you’ve been using DIY stations instead of their managed system.
Bait Stations vs. Liquid Soil Treatments
Liquid treatments involve trenching around your foundation and applying a termiticide to the soil, creating a continuous chemical barrier that kills or repels termites trying to pass through. They work faster than bait stations because the barrier is active immediately across the entire perimeter, while bait stations rely on termites randomly finding each station.
Bait stations have their own advantages. They use far less chemical overall, which matters if you have wells, water features, or environmental concerns. They’re less disruptive to install since there’s no trenching along your foundation. And they’re the better option when physical obstacles like patios, driveways, or HVAC units make continuous soil treatment impossible. Many pest control professionals now use both methods together: a liquid barrier for immediate protection and bait stations for long-term colony monitoring and elimination.
What Termite Traps Won’t Do
Bait stations only target subterranean termites, the species that travels through soil. They won’t help with drywood termites, which live entirely inside the wood they eat and never contact the ground. If you’re in a region where drywood termites are common (coastal areas of the Southeast, Southwest, and California), bait stations alone may leave you exposed to a different type of infestation entirely.
Bait stations also won’t stop an active infestation quickly. If termites are already inside your walls, it can take several months for a bait system to eliminate the colony. In cases where structural damage is actively progressing, a liquid treatment or localized spot treatment is typically used first to halt the immediate threat, with bait stations added afterward for ongoing protection.