This drain cleaner is meant to be used as a maintenance product, not as a stand-alone product when your drain is already clogged.
This drain maintenance product uses bacteria that produce enzymes that are present in organic matter, such as food particles, hair, mildew, mold and algae. The enzymes break down the material into tiny pieces that can then be flushed through your pipes with water. It is non acidic or alkaline, non-pathogenic, and eliminated strong odors. It is harmless to marine, plant, and animal life.