<human>:  What are the best materials to use for an outdoor deck?
<bot>: The best materials to use for an outdoor deck are pressure-treated wood, composite decking, and cedar. Pressure-treated wood is a strong, durable, and cost-effective option that can withstand extreme weather conditions. Composite decking is made of a combination of wood fibers, plastics, and other additives, making it a more eco-friendly and low-maintenance option. Cedar is a naturally weather-resistant lumber that feels great on bare feet and requires little more than annual cleaning.