It's an invasion of fun! These harmless swarms of ultra-realistic insects come complete with tiny hidden sticky wheels for lifelike swarming action! Use them again and again- race 'em down windows or walls. Designed to run on smooth, clean surfaces. Ideal for mirrors, glazed tiles, linoleum, laminates and other non absorbent surfaces. The sticky wheel may stain wallpaper, paint, wood, rubber, carpets, fabrics and other absorbent materials. To operate properly, your bug must remain clean. To remove dirt, simply wash the sticky wheel with soap and water.