What are some effective strategies for reducing waste when purchasing appliance care products, considering the trade-offs between concentrated formulas, refill options, and single-use packaging? For instance, are concentrated formulas always the most environmentally friendly choice, or do the energy required for transportation and the potential for over-dilution offset any benefits? Similarly, how do refill options balance the need for convenience with the risk of contamination and the environmental impact of shipping? Are there any innovative packaging solutions or business models that could disrupt the status quo and provide a more sustainable approach to appliance care product distribution?