PORT
Holding Tank Treatment
WasteFrom $18.00
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PORT is a powerful outdoor restroom and holding tank treatment that provides rapid waste degradation and odor control. PORT efficiently and effectively breaks down solid waste, clears bio-solids in septic systems and opens up clogged pipes, often adding years between tank pumping. Benefits of PORT:...
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Product Details
PORT is a powerful outdoor restroom and holding tank treatment that provides rapid waste degradation and odor control. PORT efficiently and effectively breaks down solid waste, clears bio-solids in septic systems and opens up clogged pipes, often adding years between tank pumping.
Benefits of PORT:
- Eliminates unpleasant odors rather than simply covering them up with perfumes or fragrances
- Harmless to human, animal and marine life
- Digests difficult compounds toxic to naturally occurring beneficial bacteria or existing sewage bacteria
- Breaks down difficult detergents, fats, oils, tissue and hydrocarbons with biological additives
- Reduces corrosion resulting from leaching hydrogen sulfide
- Non-corrosive and non-pathogenic
- Safe to handle and store
- Free from harsh chemicals
PORT is also available in our Pour the PORT Septic Tank Treatment Subscription.

PORT is a USDA Certified Biobased Product®. This means that it's made of primarily biological products and therefore considered an alternative to petroleum-derived products by the USDA.

2009
Founded
A+
BBB Rating
1,000+
Farms Helped
17+
Years Experience
Customer Reviews
4.4
NO MORE STINK!
Keeps vaulted privy from being stinky all summer!
It's the real deal!
Works as advertised. Helped rejuvenate my drain field. Also reduces odors and helps waste break down faster.
NO MORE SMELL!
My septic overflowed and my drain to leech field was completely clogged. I bought a sewer jetter to use with my pressure washer and opened lines up. I was using a different product and still had smell. Found out about Port and since using it for 6 months no more smell. A little gross but I wanted to be sure everything was good so opened tank checked wasn’t a sludge mess and ran sewer jetter down line no blockage. Completely satisfied with PORT getting rid of smell and preventing any further issues. Read more
My septic overflowed and my drain to leech field was completely clogged. I bought a sewer jetter to use with my pressure washer and opened lines up. I was using a different product and still had smell. Found out about Port and since using it for 6 months no more smell. A little gross but I wanted to be sure everything was good so opened tank checked wasn’t a sludge mess and ran sewer jetter down line no blockage. Completely satisfied with PORT getting rid of smell and preventing any further issues.
AVOID COSTLY BACKUP!
Be proactive and avoid costly backup.
NO BACKUPS SO FAR!
I do not have a way to be sure that it did the trick but one thing is for sure....... my sewer has not backed up. I am going to ask my plumber to look into the tank to see if the build up is gone
Stop the Stink
PORT immediately stops the horrible smell when sprayed over moldering privy deposits. When mixed with medium pine chips, it seems to speed up the decomposition of the human waste.
Appreciative Trail Maintainer
As a trail maintaining group, we use PORT in our mouldering privies to increase decomposition. It means we can wait longer between the dirty jobs of cleaning out privies.
Southland Organics replied
Hi Appreciative Trail Maintainer 😀 Thank you so much for taking the time to leave this great review! We’re thrilled to hear that PORT is helping make the maintenance of your mouldering privies easier and more efficient. It’s fantastic to know that it’s allowing you to wait longer between cleanings and reduce the workload for your team. Your dedication to keeping the trails in top shape is inspiring, and we’re glad that PORT can play a small part in supporting your efforts.
Your product improved the smell of our outhouse!
Waste of money and time and caused more issues
This product really messed up the balance in our tank and leachfield causing us many issues .. I am not going to use the remaining treatments we paid for...complete waste of money and time.
Southland Organics replied
It looks like the product did EXACTLY what it was supposed to do and opened up the leach field. You likely had a biofilm break or a clog, and PORT broke it through to open it up. That is what happens when clogged leach fields are finally released
Still waiting
Well I'm sorry to say it hasn't helped yet. I had the tank pumped, I ran a snake down all three Leach feilds lines and no blockages and put the Port into the lines as directed . I guess it's been a month and no changes . I have three stars because it may help others.
Southland Organics replied
Hi Kenneth! Thanks for the feedback. I am a little confused as to what change you are looking for. It sounds like you did a lot of work to unclog your system, then added PORT. PORT couldn't unclog your lines because there was nothing to unclog. So at this point, PORT's job is to maintain those flowing lines so that you don't have to pump or use a snake again anytime soon. So the thing you would be looking for is a lack of an issue. Since you resolved the main issue before using PORT, it is just preventing future issues. Which it sounds like it has done so far? Please let me know if I am misunderstanding your issue! I want to make things right for you, just confused because it sounds like PORT is working as intended. Thanks!
Honestly, this product performs 100% as advertised
I'm just a no BS homeowner, that has searched high and low for additives that I can put in my septic tank that will dissolve the scum layer. I do not leave reviews unless I'm very impressed. And after 5 months of putting the port in my septic tank, my scum layer is no more than a very thin layer on top of the water less than 1/8 inch. I would highly recommend using this as monthly maintenance additive, you'll be as impressed with the results as I was. Read more
I'm just a no BS homeowner, that has searched high and low for additives that I can put in my septic tank that will dissolve the scum layer. I do not leave reviews unless I'm very impressed. And after 5 months of putting the port in my septic tank, my scum layer is no more than a very thin layer on top of the water less than 1/8 inch. I would highly recommend using this as monthly maintenance additive, you'll be as impressed with the results as I was.
Southland Organics replied
Wow, thank you so much! This is honestly the best review we could ever hope for. We know how well PORT works because we're really familiar with the science behind how it breaks down biofilm, so it's amazing to hear a customer witness that exact experience. Thank you so much again for taking the time to leave a review! It means the world to us. So glad your tank is performing better with PORT! In case you have not seen it already, we do have a subscription program for PORT for monthly septic maintenance. This may make it easier for you, unless you prefer to buy in larger quantities. You can check it out here: https://www.southlandorganics.com/products/pour-the-port-septic-tank-treatment
Cleared up my septic issues!
It works, had septic issues and used as directed now it has cleared up
Southland Organics replied
Roger, thanks so much for leaving a review! So glad to hear that PORT has helped resolve your septic system issues. Thanks so much for trying it out!
Questions & Answers
Q: Can you use this product in RV holding tanks?
— Mwsanchez805
A: Yes, you absolutely can! It's great for breaking down waste and eliminating odors in RV holding tanks.
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PORT
$18.00