Enzyme Cleaning Products

Rankings

Best drains & septic enzyme cleaners, ranked

6 of the 15 drains & septic products we track rate 4.0 or better across at least 10 reviews in an independent pool. Those are ranked below. The rest are listed underneath with the reason they are not here.

  1. Earthworm Drain Cleaner

    Earthworm Drain Cleaner

    4.0 / 5.0 · 1,500 reviews on amazon

    Enzyme evidence L1 : a specific enzyme is named in the manufacturer’s own document.

    EarthwormAmazon

  2. Green Gobbler Drain Sticks Deodorizer

    Green Gobbler Drain Sticks Deodorizer

    4.1 / 5.0 · 41,100 reviews on amazon

    Enzyme evidence L1 : a specific enzyme is named in the manufacturer’s own document.

    Green GobblerAmazon

  3. Rid-X Powder Septic Treatment

    Rid-X Powder Septic Treatment

    Recommended 4.7 / 5.0 · 1,100 reviews on amazon ·117.6 oz by weight

    Enzyme evidence L2 : enzyme content is evidenced, but no individual enzyme is named. ECP Rank 71.

    walmart.comAmazon

  4. Earthworm Septic System Treatment Doses

    Earthworm Septic System Treatment Doses

    Recommended 4.5 / 5.0 · 79 reviews on amazon ·6 oz by weight

    Enzyme evidence L1 : a specific enzyme is named in the manufacturer’s own document. ECP Rank 60.

    AmazonEarthworm

  5. Zep Drain Defense - Pipe Build-up

    Zep Drain Defense - Pipe Build-up

    Recommended 4.0 / 5.0 · 3,800 reviews on amazon ·$0.20/oz ·64 fl oz

    Enzyme evidence L2 : enzyme content is evidenced, but no individual enzyme is named. ECP Rank 43.

    AmazonZep

  6. Instant Power Commercial Drain Maintainer

    Instant Power Commercial Drain Maintainer

    Recommended 4.0 / 5.0 · 1,300 reviews on amazon ·1 gallon (128 fl oz)

    Enzyme evidence L2 : enzyme content is evidenced, but no individual enzyme is named. ECP Rank 39.

    Amazon

How this ranking is built

Only products that clear one gate appear above: a rating of 4.0 or better from at least 10 reviews in a pool we do not control. A rating on a seller’s own store is marketing, and a 5.0 from a handful of reviews is not evidence, so neither qualifies a product for this page.

Products that clear the gate are then ordered on four published facts:

  • Satisfaction (35%). the rating itself, across the 4.0 to 5.0 range.
  • Confidence (20%). how many reviews that rating rests on, on a log curve. The tenth review tells you far more than the three-thousandth.
  • Value (25%). price per ounce, compared only against products of the same category and physical form. A drain gallon is never ranked against a pet spray.
  • Evidence (20%). how well the product proves what it contains. L1 means a specific enzyme is named in the manufacturer’s own document; L2 means enzyme content is evidenced without naming one.

Where a product does not publish one of those inputs, the remaining weights are redistributed and the entry says so. Nothing is estimated to fill a gap. Every figure above also appears on that product’s own page with the source it was read from and the date it was read.

Considered and not ranked

These 9 drains & septic products are in the directory but did not clear the gate:

See every drains & septic product we track →