Best RV Black Tank Treatment: Good, Better & Best Options for Odour Control
By Yukon John
The Campfire Review
Practical RV tips to make camping simpler and more enjoyable.
Let’s talk about one of the less glamorous parts of RV life — the black tank.
If you’ve owned an RV for more than a couple of trips, you know exactly what I mean. Over the years, I’ve talked with thousands of RVers — new owners, seasoned road warriors, and weekend campers — and one question always comes up:
“What’s the best RV black tank treatment to use?”
The truth is, there isn’t just one answer. Some campers want something simple and affordable, others want natural options, and some want the strongest odour control they can get.
Here’s how I usually explain it if we were sitting around a campfire: there’s a good, a better, and a best option — depending on how and where you camp.
How RV Black Tank Treatments Work
Black tank treatments don’t work instantly. Most enzyme‑ or bacteria‑based treatments begin working right away, but it typically takes 24–48 hours to properly break down waste and toilet paper.
Tip from the driveway
Always start with 3–5 litres of water in the tank. It helps distribute the treatment and prevents what RVers call the “poop pyramid.” I’ve learned that one the hard way.
Another trick: add your treatment before driving. The movement of the RV naturally mixes everything inside the tank.
Good Option: A Simple, Natural Solution
If you want something natural and straightforward, a basic enzyme treatment is a great place to start.
Why this works well
- Uses beneficial enzymes and microorganisms
- Breaks down organic waste and toilet paper
- Controls odours without harsh chemicals
Better Option: Convenient and Consistent
If convenience matters to you, pre‑measured treatments offer consistent performance with no measuring or mess.
Why RVers like this option
- Pre‑measured packets or pods
- Biodegradable enzymes for black and grey tanks
- Helps reduce buildup and sensor issues when used regularly
Best Option: Maximum Odour Control
For hot weather, crowded campgrounds, or extended stays, some RVers prefer maximum odour control.
Best used when
- Camping in high heat
- Staying close to neighbours
- You want fast, aggressive odour control
Natural Alternative: Scent‑Free and Effective
If you prefer a natural, scent‑free approach, there are excellent formaldehyde‑free options that eliminate odours at the source rather than masking them.
- Formaldehyde‑free
- Safe for black and grey tanks
- Highly concentrated and efficient
Yukon John’s Black Tank Routine
- Dump the tank completely
- Add 3–5 litres of water
- Add your chosen treatment
- Drive or let it sit for 24–48 hours
Consistency matters more than which product you choose. Using a treatment every time you dump prevents odours before they start.
Not sure which one to choose?
I keep all the common black tank treatment styles in stock — natural enzymes, convenient packets, and maximum odour control options — so you can pick what fits your camping style.
Final Thoughts from Yukon John
RV life is about enjoying the adventure. A smelly or misbehaving black tank shouldn’t get in the way.
With the right treatment and a simple routine, your black tank becomes just another low‑maintenance part of RV life.
After all, every great trip starts with a well‑behaved black tank.
— Yukon John
