Preventing unpleasant odors from your floor drain is easy with regular cleaning. Use a mixture of baking soda and vinegar, followed by a hot water flush. To maintain a water seal, pour water periodically. For a gentler approach, consider biological drain cleaners. If odors persist, consult a professional plumber to inspect for underlying issues like a broken trap or sewer line problems. Trust Radiant Plumbing and Air for expert solutions to keep your floor drain odor-free.