... bet-ter marketed pay-per-wash’s convenience (for example, virtually no upfront costs for obtaining a top-of-the-line washer, free servicing, and easy trade-ins for upgrades) or bundled pay-per-wash ... energy- and resource-efficient and cost-effective) and healthy for occupants (for example, well-ventilated; constructed with materials with low or no volatile organic compounds [VOC ]). The ... or in homes situated off the power grid). That convenience, however, is being exploited for other applications. In landscaping, for example, self-con-tained solar-powered outdoor evening...