Abstract: An insecticidal device is provided which has a panel of a color having insect attracting properties, preferably yellow, and a spherical body of another color, preferably red. The spherical body is capable of defusing a liquid which contains an insect attractant and is combined with the panel in a manner that they form together an essentially flat panel having hemispherical bulges formed by the spherical body. A specific panel, which can be used as a panel in the above device and can be used as an independent insecticidal device is also provided.