I have this.
It took several months to kill all termites in my place. My case 2 boxes.
Did they put the bait in correct places? So they can reach the boxes?
Termite is really disgusting. Havent fixed damages they made yet.
3 years ago i started to use it. that company said termites would eat bait and bring back to their nest. so they Shared that kind of food and died eventually. they kept checking all stations (some had no bait, but only wood sticks inside) indoor and outdoor for their activity. i had no idea how much they consumed. just saw lots of termites moving on the bait. very disgusting thing...! within a year they claimed the termites were inactive. no more to come.
as i knew the termites were from our neighbour. they started the treatment earlier. then it was my place. i guess they search food everywhere. may pass this problem to our neighbours as well.
after the 1st year contract finished, we still have them to do monitoring job. but will not renew next time. we Feel it is safe now. hope you will get rid of it soon.