Replacement glueboard 10 pack, for use with the Gardner FW-9 FlyWeb insect light trap. Some Flyweb users prefer the discretion of this BLACK colored glue card, as the trapped insects are not as visible. Identical to EL-64 white glueboard except for the color. Packaging looks the same, but when you peel off the protective film, the sticky surface has a black background.To activate the sticking power of your glue card, just peel away the protective plastic film and insert the card into the inside slot at the back of the FlyWeb light fixture. When the card becomes full, throw it away and install a fresh card.