Eva-Dry is, according to the manufacturer, the only renewable, compact dehumidifier that fights moisture, mildew, mold and odor in small spaces. The product is filled with silica gel. When the Eva-Dry is “full,” you renew the silica inside by plugging the unit into any power outlet. When the indicator is blue again, Eva-Dry is renewed and ready for use. This process can be repeated for up to 10 years.