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Model # 100070

Internet # 202659715

Store SKU # 1000959499

3.5 oz. Septic Tank Aid

This item has been discontinued.
The Home Depot no longer carries this specific product.

$13.50 /each




Model # 100070

Internet # 202659715

Store SKU # 1000959499

The BiOWiSH 3.5 oz. Septic Tank Aid helps you protect your septic system against back-ups and odors. This eco-friendly powdered treatment is formulated to last up to 3 months and can support up to 4 bathrooms on a single system.

  • Helps eliminate odors and breaks down sludge that can cause back-ups
  • Works on most septic systems and supports up to 4 bathrooms on the system
  • Eco-friendly powder helps digest solids to help reduce the need for pumping out
  • Treatment lasts for up to 3 months
  • Fast acting, easy application and suitable for all septic systems
  • Rapidly removes rather than mask odors
  • Helps digest solids reducing the need to pump out
  • 100% natural and non-toxic


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Chemical Form 
Commercial / Residential 
Commercial / Residential 
Compatible Pipe Material 
Maintenance, Repair & Supplies Product Type 
Miscellaneous Repair Kit 
Number of treatments per container 
Prevention formula 
Protects pipes from corrosion 
Quantity (oz.) 
Safe for garbage disposals 
Set Time (Min.) 
Warranty / Certifications
Manufacturer Warranty 


Rated 4.8 out of 5 by 34 reviewers.
Rated 5.0 out of 5.0 by Excellent Product I love this product - it works great, no bad odor (sort of smells like beef bouillon, not gross). It even helps to clear clogs - my back bathroom tends to back up & whenever I use this product back there it breaks down the clog after a day or two - without using chemicals. I've also used the Septic Tank Rescue kit in the past & that really works too. April 22, 2014
Rated 5.0 out of 5.0 by This stuff works! Recently purchased a house. Previous owner didn't even know they had a septic system! So the entire system was clogged++++ and just a mess. Septic clean out quotes to fix were very expensive because involved someone physically getting in and cleaning. Thought i would add Biowish Septic Tank and see if we could break it up ourselves. 7 weeks later - new quote - no manual labor needed - just a regular pump out. Saved $500. Will continue to use the product and i will see what kind of service i need ongoing. Thanks January 4, 2012
Rated 5.0 out of 5.0 by Saved my Septic System I have been having trouble with my septic field for a couple of years. Dead grass, water running on the surface, and not able to run even my push mover over the septic field without sinking in. Shortly after I began using the product I noticed that the new grass I planted began to take hold and I was able to run my tractor over the field without sinking in. I still have an odor and am confident that with continued use that that problem will also disappear. January 4, 2012
Rated 5.0 out of 5.0 by Amazing results 4 months ago, I purchased a home that had a badly neglected septic system. I was told by the neighbor that the previous owner had nothing but problems with it and had to have it pumped regularly. I decided to try this product before putting in new leachlines and am so glad that I did. We have not experienced any problems with the system and will continue to use it every 3 months. Awesome product! January 14, 2012
Rated 5.0 out of 5.0 by So far-so good! It has only been a couple of weeks since administering Septic Aid but after just a couple of days we noticed the problem spot in the yard (about 2 feet in diameter) had significantly diminished. Product info states one packet will last up to 3 mos. We were going to give it 3-4 weeks to improve before purchasing their Septic Rescue product but it doesn't appear as tho that will be necessary. If our system continues to improve, we will just continue to use Septic Aid as a maintenance product. Never saw any product of this type work so quickly. VERY REASONABLY PRICED AND SAFE FOR THE ENVIRONMENT. January 5, 2012
Rated 4.0 out of 5.0 by good to have a product like this available! We have only used this product once, so can't say if it has made a big difference so far, but we are certainly glad something like this is available on the market. Our neighbours had to have their septic tank pumped out after it overflowed - that's not something we even want to think about, let alone live through! A plumber (here in rural SE Australia) told us the standard treatment is to drop a whole, dead chicken into the tank to set off a biological reaction that helps it to function better, but we don't even know where the main entrance to the tank is (sounds silly, but true - we've only been here a few years) and would have to pay a plumber with a search-thingy-gadget to find it. This tank aid has circumvented all of those issues, so we're going to stick to this product. January 4, 2012
Rated 5.0 out of 5.0 by A Miracle in a pouch This product worked fabulous. My septic tank had a back up smell coming out into my bathroom. I hated the thought of having someone come out and pump my tank with the expense that goes with that. After using the Septic Tank Aid only ONE time the smell went away. One pouch went in 3 commodes. Now I am faithful to use it every three months and I am having no more problems at all. No adverse effects to my commode or plumbing. THANK YOU SEPTIC TANK AID January 4, 2012
Rated 5.0 out of 5.0 by Best I have used so far! We had a really bad sewer gas odor right by our front door that I was using an expensive monthly treatment for. It worked as long as you didn't forget by even a day or two. Then I saw Biowish and decided it was worth a try. It is less then 1/4 the price and far more forgiving when it comes to applying on the exact date. Plus they have a system to remind you be email when it is time to reapply! I am on my 3rd application and the only down side so far is that it isn't always stocked at the local store so I always keep one on hand. Since this is just my 3rd application I can't tell you how the actual performance is in the tank and field lines but I am really interested in hearing from the septic guy next time I have it pumped. I know it keeps the odor at a minimum. Also since the odor is its worst in the coldest winter months these next 3 months will determine its real effectiveness. January 4, 2012
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