Termite bait systems are misleading. The data shows the termites are not attracted to the stations, they merely run into them, therefore, they should not be called baits. This is where I begin to answer your question.
These stations are placed approximately every 10 ft around a covered structure, leaving lots of room for failure. The theory is that the termites will eventually run into the station, carry the bait back to the colony and eventually spread the active ingredient to all members of the colony.
With termites being very destructive and control left to accident, we do not recommend these "bait" systems. There are relatively safe alternatives with hugely more successful control rates.
For sensitive environments, we would recommend a new product made by Dupont, called Altriset. The active ingredient does not affect humans.
This product is applied by drilling and injected into the live areas and to the balance of the structure for whole house control and prevention.
There are other products out there that are equally effective and are relatively low risk with regard to exposures and reactions.
Emergency Pest Patrol, LLC.