Pacifiers that do not contain toxic materials are efficient. Infants are much more susceptible to chemical contamination that adults. A company from Denmark, Natursutten, makes 100% rubber pacifiers using natural latex from the tree Hevea brasiliensi. These pacifiers have no artificial colors, chemical softeners, parabens, PVC, or phthalates. They are softer than pacifiers made of silicone or plastic.