EZ Step(R) Rug Gripper with Rug-lok technology is a Zero VOC Solution for all area rugs. Zero VOC means better indoor air quality. Volatile Organic Compounds (VOCs) are carbon containing chemicals that easily become vapors or gases. Unfortunately many household products contain VOCs such as formaldehyde, which can dramatically affect indoor air quality and make you sick. Fortunately EZ Step Rug Gripper is a Zero VOC product, making it a healthy choice for home, office, family and pets.