DrainKleen One Shot is a powerful and effective liquid drain cleaner which is the perfect size to treat a single condensate drain. DrainKleen One Shot has been formulated specifically to clear organic blockages found in condensate drains* within air conditioning and refrigeration units. The unique "swan neck" spout of the dispenser bottle allows for easy application of the product in awkward to reach condensate drains.

DrainKleen One Shot also removes lime scale and rust deposits from drains and traps. What's more, because its specific gravity is heavier than water, it quickly finds its way to the source of a blockage before becoming fully activated even when a U-trap is situated between the blockage and the access point.