Pestrapâ¢ Insect Traps are an easy and cost-effective way to monitor and control pests.â¢ A crucial factor in effective integrated pest management. These yellow and blue cards attract and trap potentially harmful insects before they can cause serious damage.â¢ Utilizes an extremely sticky adhesive that is non-toxic.â¢ Grids enable quick, easy and accurate monitoring.â¢ Blue or yellow cards allow you to target specific pests.â¢ 3′ x 5′ traps are ideal for monitoring greenhouse conditions to avoid pest damage. Use one to three traps for every 1,000 sq. ft.â¢ 4′ x 10′ traps allow you to monitor and control pests. Use one trap for every 500 sq. ft. for monitoring and ten traps for every 1,000 sq. ft. for control.â¢ Disposable and pesticide free.â¢ Ideal for aphids, leafminers, flea beetles, gnats, thrips, whiteflies and more.