Gardner’s Insect Monitor Cards are designed to capture all types of insects that harbor in and around plants. Fungus gnats, white flies, aphids, are just a few of the species attracted to our traps. In order to maximize catch rates of the different species of insects we utilize a two sided yellow insect attracting trap. Traps are packaged as 10 double-sided cards per pack. Non-Toxic No Mess Easy to Use 1′ Monitor Grid for Easy Insect Identification We have perforated the traps to increase the use options: Use as a 4′ x 8′ trap. Fold into triangle-shaped delta. Tear apart at perforations for use in smaller areas or close to base of plants. How to use: Fold or tear trap into the desired format. Peel protective cover from one or both sides of the trap. Place or hang traps close to plants. When used in large areas, traps should be placed 10-15 feet apart. For both indoor and outdoor use. Monitor traps on a regular basis – replace as needed.