The Yes-o Mosquito Catcher Insect Killer YIK-02 is an electronic device designed to attract and eliminate flying insects like mosquitoes, flies, and moths. It typically uses UV light to lure pests and then a high-voltage grid to zap and kill them. The device is a "catcher" and not a handheld racket. It is designed to be a non-toxic, non-smell, and non-polluting solution for indoor insect control. Some models may have a mosquito catcher tray for easy disposal of the dead insects.