Last Updated: April 2026 | Reviewed by The PCC Research Team
In California, there are two types of homes: those that have termites, and those that will get them. When the inevitable happens, homeowners face a difficult choice between competing bait station technologies to stop the colony from destroying their property.
The Quick Verdict: Rent vs. Own
Both systems use similar science to kill Subterranean termite colonies. The real difference isn’t the poison—it’s the contract. Do you want to pay a yearly rental fee, or do you want to own the system forever?
The “Rental” Model
Sentricon Always Active is a service. You pay an annual fee ($300+). If you cancel, the pest company pulls the stations out of the ground. You own nothing.
The “Ownership” Model
Trelona ATBS is an asset. Whether you hire a pro or install it yourself, the stations stay in your yard forever. You simply buy refill cartridges when needed.
The Bottom Line: Sentricon is best for “hands-off” homeowners who want a subscription. Trelona is best for long-term value and DIYers.
Quick Navigation:
1. Head-to-Head: Specs & Ingredients
Sentricon is the “Coke” of the industry—the original standard. Trelona is the “Pepsi”—the newer, aggressive challenger from BASF. Here is how they stack up.
| Feature | Sentricon (Always Active) |
Trelona (ATBS System) |
|---|---|---|
| Visual ID | Green Cap | Black Cap |
| Active Ingredient | Noviflumuron (IGR) | Novaluron (IGR) |
| Station Design | Slim Cylinder Tube | Wide “Waffle” Grid |
| Bait Consumption | Termites eat upward | Termites eat inward |
| DIY Availability | NO (Pros Only) | YES (Available Online) |
The Chemistry: Both use a Chitin Synthesis Inhibitor (IGR). This creates a “colony collapse” by preventing termites from molting. Once they eat the bait, they cannot grow new skin, and they die. Effectiveness is virtually identical.
2. “Found Faster”: Why Design Matters
Termites are blind. They find bait by randomly bumping into it while foraging underground. This is where Trelona claims an advantage.
- Sentricon (The Tube): Has a smaller surface area. It relies on termites bumping into a slim vertical cylinder.
- Trelona (The Waffle): Is wider and creates a larger “shadow” in the soil. The “waffle” design allows more soil-to-station contact.
The Theory: A larger footprint means it is statistically more likely that a termite tunnel will intersect with a Trelona station than a Sentricon station, leading to faster colony discovery.
3. Can You Buy These Yourself? (DIY)
This is the biggest factor for our readers.
Sentricon Policy
You cannot legally buy Sentricon stations as a homeowner. If you see them on eBay, they are likely stolen or expired. You MUST hire a “Certified Sentricon Specialist” to install and monitor them.
Trelona Policy: While primarily a professional product, homeowners in most states (check local laws) can purchase Trelona ATBS kits online legitimately.
The Cost Savings: A professional Sentricon installation often costs $1,500 – $2,500 (see our full California termite treatment cost guide). A DIY Trelona kit for an average home costs ~$300. You just need a power drill and an auger bit to dig the holes.
4. Frequently Asked Questions
Q: Is Trelona better than Sentricon?
A: Trelona ATBS is comparable to Sentricon in killing power but offers a larger ‘waffle’ design for potentially faster discovery. The main advantage of Trelona is that you can own the system (DIY), whereas Sentricon is strictly a rental service.
Q: Can I install Sentricon myself?
A: No. Sentricon is a restricted product available only to Certified Sentricon Specialists. Homeowners cannot legitimately purchase the stations.
Q: Do termite bait stations work on Drywood termites?
A: NO. Soil bait stations ONLY target Subterranean termites. Drywood termites live entirely inside the wood (like in your attic) and do not travel through the soil. You need fumigation or spot treatments for them.
Q: How often do I need to check the Trelona stations?
A: Trelona is labeled for Annual inspection, meaning you only need to check it once a year. However, many pest control experts recommend checking every 6 months to ensure the bait hasn’t been fully consumed by a massive colony.
Q: Can I use Trelona bait stations with a liquid spray treatment?
A: Yes. Many professionals use a “Hybrid” strategy: They install Trelona stations around the yard AND spray a non-repellent liquid like Termidor (Fipronil) in a perimeter trench around the foundation for double protection.