How To Get Rid Of A Poop Pyramid In Rv Black Tank (Step-by-Step Methods)

The feeling of freedom and being near nature is undeniably the best. And if you have an RV, the possibility to bask in the wild is endless. Just fill up your cooler, fill up the gas tank, and get on the road! 

Talking about tanks, one inconvenience most RVers face is a poop pyramid in their black tank. If you are one of the right now and wondering how to get rid of a poop pyramid in RV black tank, we have 2 guaranteed methods today. 

The secret behind getting rid of the poop pyramid is breaking the pyramid manually with a bending stick or shovel, or using a chemical product to flush it all out.

Don’t worry partner, we are in this together and we’re going to guide you through it. 

How To Get Rid Of A Poop Pyramid In Rv Black Tank

2 Easy Methods To Get Rid Of A Poop Pyramid In Rv Black Tank

If you’re not familiar with what a poop pyramid is, then let’s familiarize ourselves with that quickly and fast. Your RV toilets have a direct connection with the black tank. It’s right beneath it. 

So whenever you flash it, the poop goes under. And over time it piles up. And if there is not enough water in the black tank, the waste piles up, forming a pyramid shape. A poop pyramid. 

To get rid of that God-awful thing, you should follow these 2 full proof methods. 

  1. Manually Breaking Down The Poop Pyramid
  2. Using Chemical Rv Tank Cleaner

Now let’s get on to extinguishing that huge pile of pyramids, shall we?

Method 1: Manually Breaking Down The Poop Pyramid

You will need a stick if your toilet has straight plumbing. If not, you have to get a flexible plumbing swivel. And water. That’s all you need.

Step 1: Breakdown

The first thing to do is to break down the pyramid. You will need a long stick to break down from your toilet. If the toilet has a bend plumbing, go for a flexible swivel. When you feel that it is good enough, proceed to the next step.

Step 2: Flush With Water

Start flushing with water. You can add more water if you want apart from the flush. Make sure the black tank valve is turned off of the external output. Otherwise, the water will flush itself out and the hardened waste will remain.

Step 3: Back Flush From The Back Of The Tank

After a good amount of water is in the tank, you should go for a back flush. 

Step 4: Clean The Tank Thoroughly

Give it a few minutes to all mix together and then release the tank valve. Clean the tank thoroughly and use a black tank decomposer so that it doesn’t create a pyramid again. 

Method 2: Using Chemical Rv Tank Cleaner

This one requires very minimal effort. You can or even leave the breakdown process out. 

Step 1: Close The Valve

Start by closing the black tank valve. You don’t want all the precious money that you used on the chemical to go down the drain, literally, without doing its thing. 

Step 2: Apply The Chemical

Apply the chemical you have bought. Happy Campers Organic Treatment, Camco TST Ultra, Thetford Aqua Kem, or any other black tank cleaner will do the trick. Dump it down from your toilet and proceed to fill the tank with water. And we mean to the brim!

Step 3: Go Have A Drink And Let It Do Its Thing

When you are done filling the tank with water, you can go and give it time to work. Have a drink, or go with your regular day-to-day activity. Because it will take time. 72 hours to be exact.

Step 4: Check And Clean After 72 Hours

After 72 hours, the real work starts. You have to drain your RVs black tank, along with the occasional rinsing and filling up the tank. Do this process until you find the water coming out clean.

Step 5: Add Decomposer And Fill Tank With Water

If you see the water is clean and everything in the tank seems to be out, add the decomposer and fill the tank with the recommended level of water. And you are done. 

Pro Tips:

  • Not to deal with a Poop Pyramid anytime in the future, make sure the black tank has enough water.
  • Use a decomposer. This helps the breaking down easier.
  • Do not keep the RVs Black Tank open all the time. This way the fluids escape making the waste go dry and hard. 
  • Always clean your tank from time to time to avoid the build-up. 

Frequently Asked Questions and Answers (FAQs)

What are the best chemicals for an RV toilet?

Camco TST RV Toilet Treatment, Porta Pak, Aqua Kem RV toilet chemical, Travel Jon, and Happy Campers Organic Treatment are a few of the best RV toilet chemicals. Make sure the product is environmentally friendly and biodegradable. This will not stain your toilet or damage your tank. 

How do I keep my RV toilet smelling fresh?

The best way to keep your RV toilet smelling fresh apart from using an odor remover is to keep your toilet clean. Use enough water to flush after every use, clean your black tank regularly with chemical cleaners, and always use RV toilet paper instead of regular one. Also, clean the toilet and flapper regularly. If there is damage to the tank, fix it promptly. 

Can I put bleach in my RV black tank?

No. Bleach will damage the rubber seal and damage your sewage system. Rather go for an RV tank and toilet cleaner which are a lot less harmful. 

Can I put vinegar in my RV toilet?

Sure! You can use vinegar to clean your RV toilet. But just don’t overdo it and mix it with the same amount of water and spray over the surface to clean it. Don’t pour down the whole bottle down the toilet as it will disrupt the waste breakdown process. 


Everything we own functions better if we take care of it. Remember, a good RV means a better time. So break down your pyramid with caution and don’t let it happen in the first place. Have enough fluid in the tank and flush with more water. And you will be on the road for a very long time, without any smell or trouble. Happy camping!

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