One of the advantages of the subject matter catcher device is that it does not trap and kill useful insects (predators, parasitoids and pollinators) which show up during daylight hours at open areas such as gardens and fields since the voltage circuit is turned off during the daytime by a timer or photocell relay installed to the electricity circuit. The catcher device is configured to capture harmful flies and insects which only show up at nights by that feature it has. Another advantage of the subject matter catcher device is that it also provides the opportunity to catch the target insects during the daytime by preventing the light from turning on and by using odor emitting solutions such as pheromone, vinegar, hydrolyzed protein and the like that may attract target insects by using photocell relay such that it only controls the light in the circuit. A further advantage of the subject matter catcher device is that the multi-layer cage system designed for electricity voltage is constructed such that it surrounds the light source in the middle of the device for 360 degrees, that it enables adjustment of distance of two wire cage and intervals of wire cage according to sizes of flies and insects such that they are wider at outside and narrower at inside by means of two, three or four layer aluminum wire cages. Thereby, the measurement and wire interval of the aluminum wire cages used on the catcher device can be varied according to each targeted pest, and the tank into which dead insects fall and are collected can be manufactured in various shape and dimensions in accordance with the area of its use. There are cages produced by single layer in the state of the art, and it is observed that some flying insects smaller than grill intervals do not die and continue to harm plants, whereas it is ensured in our invention that pests small enough to avoid first two layers without dying cannot avoid the third layer due to the fact that the cage is provided with three layers. By this means, the device can even catch small flying insects with a size of 0.5 mm by means of the narrow holes of the innermost layer of the cage system beside large sized flying insects. One of the advantages of the subject matter catcher device is that it prevents the possibility of short circuit and the possibility of shocking the user even at a low level by adding also a dielectric protection cage having wire intervals that do not prevent the passing of flying flies and insects on outermost of this cage in order to avoid short circuit as result of contacting wire cages to each other by bending as result of the fact that a person holds it from the expanded aluminum wire cages designed as two, three