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Oxygen release · Aerobic bacteria · Monthly tablet

Give your septic tank a simple monthly tablet it can actually use.

Septifix is a flush-down septic tank treatment. Each tablet releases oxygen and live aerobic bacteria to help with odor, organic sludge and the backups that follow a neglected tank.

  • Helps ease septic odor, often within 3 to 5 days of the first flush
  • Breaks down organic waste such as paper, oils, grease and soap residue
  • Start with 3 tablets, then keep one tablet a month in the routine
  • Safe, non-toxic tablets made in the USA. One-time purchase, not a subscription.
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Septifix septic tank treatment box with monthly tablets
Made in the USA
Safe, non-toxic tablets
Oxygen-releasing formula
60-day money-back guarantee

What Septifix is built to do

A monthly tablet for homes on a septic system that want fewer odors, less sludge and fewer calls to the pumper.

A septic tank only works when bacteria can keep up with everything the house sends downstairs: toilet paper, oils, grease and soap. Bleach and harsh cleaners can knock that biology back, and the smell, slow drains and a full pump truck are usually what show up next. A typical pump-out runs a few hundred dollars. A repair runs far more.

Septifix is a 55 gram tablet you flush. It dissolves in the tank, releases oxygen (up to about 10 liters per tablet) and sodium carbonate to buffer pH, and carries 14 strains of aerobic bacteria — over 10 billion per gram — into the sludge layer. The point is a tank that keeps digesting waste, so odor fades and pumping day moves further out.

How the tablet works once you flush it

Oxygen, a pH buffer and live aerobic bacteria, released in the tank rather than poured down as a liquid.

1

Flush it and let it travel

Drop the tablet in the toilet and flush. It moves with the wastewater into the septic tank and dissolves there.

2

Releases oxygen

Each tablet is made to free up to about 10 liters of oxygen as fine bubbles, so aerobic bacteria have air to work with.

3

Buffers the water

Sodium carbonate nudges wastewater toward a neutral pH, a more workable setting for the live cultures in the tablet.

4

Feeds on organic waste

Fourteen aerobic strains, over 10 billion per gram, digest paper, oils, grease and soap residue that turn into sludge and clogs.

5

Starts in the sludge layer

The tablets are designed to settle into the sludge and treat the tank from the bottom up, not only the water at the top.

6

Becomes a monthly habit

After the starting flush, one tablet a month is the ongoing dose. Odor is often the first thing people notice easing, in about 3 to 5 days.

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Inside every Septifix tablet

What the 55 gram tablet carries into the tank, based on the product label and description.

Ingredient Role in the tablet Why it is included Form
Aerobic bacteria blend Organic waste 14 strains, over 10 billion per gram, to digest paper, oils, grease and soap residue Live cultures
Oxygen-releasing compounds Tank aeration Up to about 10 liters of oxygen per tablet to support aerobic activity and cut odor Tablet core
Sodium carbonate pH buffer Moves wastewater toward a neutral pH so the cultures have a workable environment Mineral compound
55 gram tablet Monthly dose Six tablets per box, labeled as a monthly septic treatment and made in the USA Flushable tablet

Choose your Septifix supply

Each box holds 6 monthly tablets. Longer supplies lower the price per box. The 12- and 18-month orders ship free.

6 Month Supply

1 box · 6 tablets

One box of Septifix septic tank tablets

$99 per box

$69 / box

Save $30

$69 total + shipping

Order 1 Box
Best value · Most chosen

18 Month Supply

3 boxes · 18 tablets

Three boxes of Septifix septic tank tablets

$99 per box

$49 / box

Save $150 · free shipping

$147 total · about $8 a month

Order 3 Boxes

12 Month Supply

2 boxes · 12 tablets

Two boxes of Septifix septic tank tablets

$99 per box

$59 / box

Save $80 · free shipping

$118 total

Order 2 Boxes

The routine that goes with the tablets

Two steps from the carton directions. No tools, no mixing, no recurring bill.

1

First flush: 3 tablets

Start with 3 tablets down the toilet, and scale that first dose to the size of your tank. This is the load that begins the odor and sludge work. Many people notice the smell ease within 3 to 5 days.

2

Then one tablet a month

After the start, flush a single tablet once a month. Skip bleach and other harsh tank killers while the bacteria are working. A septic pro is still the right call for a cracked tank, a failed drain field or sewage in the house.

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What homeowners report after they start

Notes published by people who flushed Septifix on the schedule above.

John C. — Los Angeles, CA ★★★★★

"The smell around the tank was so bad I hesitated to have guests, and the grandkids were kept off that part of the yard. I started with 3 tablets. The odor was gone in about 3 days, and standing water over the lid was gone in about 5. One tablet a month has kept it that way."

Kathy M. — Stowe, VT ★★★★★

"After years of bleach, the pumper found heavy solids and clogs and told us to treat the tank before they came back. We did a 3-tablet start, then one tablet a month, and stopped the bleach. On the return visit they said pumping was not needed."

Michael P. — Brevard, FL ★★★★★

"Our tank and field date to 1989, and I had been paying nearly $500 a year to empty it. I put one tablet in the toilet on the first of the month. That is the whole routine, and I have not had to book the pumper on that old schedule."

Why people stay with Septifix

Practical reasons a monthly tablet earns a place next to the other house upkeep.

60-day money-back guarantee seal

60-day money-back guarantee

If Septifix is not the right fit, request a refund within 60 days of purchase. Use the contact on your order receipt, and follow the return steps there. Give the tablets about two months before you decide. Return shipping is not covered.

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Frequently asked questions

Straight answers before you place an order.

How should I use Septifix?
Flush the tablets down the toilet so they reach the tank. Carton directions call for a starting dose of 3 tablets, adjusted for tank size, then one tablet a month.
How does Septifix work in the tank?
Each 55 gram tablet dissolves and releases oxygen, up to about 10 liters, plus sodium carbonate to buffer pH. Fourteen strains of aerobic bacteria, over 10 billion per gram, then feed on organic residue such as paper, oils, grease and soap film.
How is Septifix different from a typical enzyme treatment?
Septifix pairs an oxygen release with live aerobic bacteria rather than enzymes alone. The oxygen supports those bacteria and reacts with odor-causing compounds, while sodium carbonate moves wastewater toward a neutral pH.
Which supply is the better value?
The 18-month supply is three boxes at $49 each, $147 total, with free shipping. The 12-month supply is two boxes at $59 each, $118 total, also with free shipping. One box is the 6-month supply at $69 plus shipping.
What if Septifix is not a fit?
Checkout includes a 60-day money-back guarantee. Contact the seller on your receipt to request a refund. Plan on using the tablets for about two months before you decide, and follow the return steps in that receipt. Return shipping is not covered.
How long does shipping take, and is this a subscription?
Orders are processed within about 24 hours and shipped by UPS. Delivery is commonly 5 to 7 business days. Every package on this page is a one-time charge. You are not enrolled in a refill subscription.
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