The product has a very good quality–price ratio and its use is extremely simple. It is a self-adhesive tape that is placed at specific spots in the house. I do not have a photo to send you, but when a cockroach passes over the tape, it sticks to it and remains there, as the glue is particularly strong.
The product is also useful when you just want to check if there are cockroaches in the house before proceeding with any disinfection.

The glue it has is not just strong, but very strong. It can stick not only a cockroach but also something 10 times bigger and much heavier. I put it in some areas where cockroaches were passing through, and not even one (!) got caught there, which means: a) they magically disappeared, b) they saw that something was there and changed their route. The cockroach precursor leaves behind "traces" that the others follow and go somewhere as dark, humid, and quiet as possible to make their nest. Well, it seems that in my case, it didn't pass through any of the 11 traps I placed in various parts of the house, resulting in none of them getting caught. If (I say if) they are forced on their "route" and fall onto this trap, then yes, they will stay there forever, but they have to enter in order to have, let's say, a fall on the surface. If they approach and see that it sticks on the first step, isn't it logical for them to change their route?