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Drain Defense Pipe Build-Up Remover – 64 Ounces – ZLDC648 – Professional Strength Liquid Pipe Build up Remover,Green. Part Number ZLDC648. Model Number ZLDC648. Do not use drain for 6 hours. For faster results, use 8 ounces of the Zep Liquid Drain Defense followed by 16 ounces of warm water.

Do not use drain for 6 hours. For faster results, use 8 ounces of the Zep Liquid Drain Defense followed by 16 ounces of warm water. Wait 6 hours. ZEP DRAIN DEFENSE PIPE BUILD UP REMOVER. This certified formula is ideal for sinks, toilets, and showers and breaks down into carbon dioxide (CO2), minerals, and water.