Recurring HVAC odors can develop when moisture and microbial contamination collect around evaporator coils. Dirty Sock Syndrome Spray from ComStar International Inc. is designed for professional HVAC maintenance and helps address odor-producing buildup associated with bacteria, mold, and mildew. Cleaning affected surfaces can support improved system hygiene and fresher indoor air when incorporated into an appropriate maintenance program. Technicians should also inspect the system for moisture or other underlying conditions that may contribute to recurring odors. ComStar manufactures specialty HVACR chemical solutions for professional applications. With more than 50 years of manufacturing experience, the company continues to provide maintenance products designed to help technicians handle common HVAC cleaning and odor-control needs.