This surface treatment method comprises a rustproofing step, a rinsing step, and a cleaning step. Same optical signals are propagated through power outlets and via power cable assemblies to electrical appliances for controlling the appliances operation and on-off switching. The method may include characterizing each particle detected by a signal vector. A discharge outlet member from the hollow interior of said tubular body for the discharge of irrigated fecal matter from the device. The solar collector-reflector assembly has surfaces that either collect or reflect solar energy, and the solar collector-reflector system utilizes air-to-air heat transfer to provide additional heating to an existing ducting system in the dwelling or reflect solar flux from the roof, thereby reducing heating and cooling energy consumption and costs.