most 'dry' dryer sheets are made with animal fat. thats dirty. and sticky. and gross. and they leave a gummy residue on the fabric's surface which can dull colors over time. squeaky green wet dryer sheets are 100% gross stuff-free. their water-based technology infuses renewable plant-based softeners directly into the fabric as it dries, so clothes come out of the dryer naturally soft and static-free. all without animal by-products, which you can feel good about. especially if you're vegetarian.