A light weight, molded foot wear carrier consists of a body forming two open cavities with a dividing wall between the cavities. In a humidity sensor embodiment 100, radioisotope generated voltage biases are employed to power sensor capacitors to realize self-powered sensors. The storage system receives information relating each identification device with both its code and its associated object. As water is removed from the processing equipment, the removed water carries with it abraded material. The low molecular weight silicone in amounts less than 1% counters the anti-foaming effect of the high molecular weight silicone thereby allowing formation of a stable lightairy foam.