Absolutely, both basement floor drains and basement shower drains require traps. These essential components are integral to plumbing systems, acting as barriers against sewer gases. In the case of a basement floor drain, the trap forms a seal to block odors and gases from the main sewer line. Similarly, a basement shower drain relies on a trap to maintain a protective barrier against sewer gases, ensuring a safe and odor-free environment. Compliance with local plumbing codes often mandates trap installation, emphasizing their necessity to uphold health and safety standards in basement drainage systems.