Flow Shield - AC Drain Line Cleaner and Maintainer

Flow Shield is a non-toxic, biodegradable cleaner that prevents clogs and odor in HVAC and refrigeration systems. It provides up to 3 months of protection when poured into drain lines.

• The description claims that the product works in all HVAC and refrigeration drain lines.
• The description claims that the product is backed by EPA card holding HVAC technicians.
• The description claims that the product is effective against organic build-up and odors.