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Max Build-Up Remover

Prevents plumbing problems

  • great for prevention icon

    great for prevention

  • powerful natural enzyme formula icon

    natural enzyme power

  • safe on all pipes icon

    safe on all pipes

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Where it Works

Safe for garbage disposals, bathroom, kitchen and other drains. Also safe for toilets.

How it Works

With a unique formula containing natural enzymes and bacteria, Drano® Max Build-Up Remover helps prevent clogs from forming in your pipes. This product will not open clogs. Use it on a monthly basis to keep your drains running smoothly and prevent clogged drains. An ounce of prevention is worth a pound of cure!

powerful natural enzyme formula icon

Unique formula with natural enzymes

helps remove build-up icon

Helps remove build-up

safe for septic tanks icon

Prevents septic system back-up

safe on all pipes icon

Won't harm pipes, garbage disposals or septic tanks

can leave in drains overnight icon

Can leave in drains overnight

contains no phosphorus icon

Contains no phosphate, a potential cause for harm to rivers and lakes


open product icon

Carefully push down on childproof cap with palm of hand and turn cap counterclockwise. Don't squeeze bottle or splash product. (Clean up any spills at once.) To lock cap, push down on cap and screw on tightly.


flush drain with water icon

For slow-running drains, run warm water (not hot) through drain for one minute.


slowly pour over drain icon

Turn off water and pour one-fourth of a 64 oz. bottle directly into drain. Briefly run water again (approximately two cups) to activate and distribute formula along pipe walls.


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Allow enzymes to work overnight or while at work (six to eight hours) before running water in drain again.

For more severe problems: Follow directions above for three nights in a row, using two ounces of Drano® Max Build-Up Remover.

For slow-running toilets: Flush four ounces down toilet for three consecutive days. Avoid flushing for six to eight hours after each treatment.

Initial use may cause loosened build-up to temporarily slow or in rare cases block the flow of water. Do not worry—this means that the product is working to remove build-up. If this occurs, plunge and repeat the treatment. Avoid using other drain openers during this time.

Read product label for additional information and precautions.