Podcast Episode September 15, 2025

Episode 133 | Human Waste Management

podcast 133 human waste management

Episode Summary

In this episode, Ryan Jordan examines why traditional cathole practices often fail in alpine, desert, and high-use environments. Drawing on scientific research, policy gaps, and evolving Leave No Trace ethics, he explains why pack-out systems are trending towards a new standard for modern backpacking. Listeners will gain practical guidance for field practices, insight into shifting wilderness norms, and new perspectives on the future of backcountry waste management.

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Show Notes:

Episode Outline: Reassessing Backcountry Sanitation

Introduction

  • Episode focus: Why human waste management in the backcountry is becoming more problematic – and how we can adapt.

The Problem

  • Traditional reliance on catholes and their ecological limitations.
  • Fragile soils (alpine, desert) and decomposition challenges.
  • Rising backcountry visitation and lower exposure to Leave No Trace education.
  • Shift from “trusting wilderness to absorb impacts” to toward “personal accountability.”

The Science

  • Soil Microbiology & Decomposition Capacity: Where catholes work (temperate forests, rainforests) vs. where they fail (alpine, desert).
  • Hydrology & Contamination Pathways: How water transports pathogens from catholes to streams/lakes.
  • Pathogen Persistence: Evidence that fecal pathogens remain viable for months to years in fragile soils.
  • Decomposition Timeframes: Field evidence showing catholes often persist for years in alpine and desert environments.

Gaps in Policy & Education

  • Agency messaging: Over-reliance on cathole guidance.
  • Leave No Trace: Updated position exists but not filtering down effectively.
  • Regulatory inconsistency: Patchwork of rules across different wilderness areas.
  • Enforcement & modeling: Lack of demonstration and reinforcement of pack-out systems.
  • Cultural inertia: Catholes as a symbolic, long-standing practice.

The Ethical Shift

  • Catholes as a legacy ethic of “trusting wilderness.”
  • Pack-out as a new ethic of responsibility and stewardship.
  • Reflects broader conservation debates: wilderness as resilient vs. wilderness as fragile with thresholds.

The Practice: What Backpackers Can Do

  • Reframe your default: Pack-out first, catholes only where soils can support decomposition.
  • Focus on containment (durable, leak-proof systems), not treatment.
  • Separate waste streams: Always pack out toilet paper.
  • Use absorbents sparingly for odor and liquid control.
  • Model behavior: Demonstrate pack-out systems to normalize practice.
  • Reframe pack-out as stewardship, not burden.

The Future of Wilderness Management

  • Policy convergence: Toward national expectations of pack-out.
  • Technological innovation: Next-gen ultralight, odor-controlled waste systems.
  • Cultural norms: Pack-out becoming as normalized as bear canisters.
  • Redefining wilderness ethics: From reliance to responsibility, preserving wild places for future generations.

Links, Mentions, and Related Content

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Igneous Bottle Cap Bidet

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Home Forums Episode 133 | Human Waste Management

Viewing 9 posts - 1 through 9 (of 9 total)
  • Author
    Posts
  • #3841443
    Backpacking Light
    Admin

    @backpackinglight

    Locale: Rocky Mountains

    Companion forum thread to: Episode 133 | Human Waste Management

    In episode 133 of the Backpacking Light podcast, we challenge traditional cathole practices, advocating for pack-out systems in alpine, desert, and high-use areas based on science and LNT ethics.

    #3841794
    Bob L
    BPL Member

    @boblloyd

    Ryan, thank you for this. All of my backpacking is in bio-rich areas of the US South almost always below tree line. But many of the places are getting more traffic, and I am wanting to get out West for a different scene. One item I have seen is from PACT Outdoors, specifically the mycelium tabs. I’m hesitant to use something that may bring a natural item into a habitat where it may not be native. I do wonder if the added benefit of jumpstarting the decomposition is outweighed by introduction of a new fungi to the environment. I’m far from a scientist and really can’t “do my own research” with any expectation that it will be bulletproof. Has anyone had experience with these, specifically in bior-ich areas?

    #3841810
    Terran
    BPL Member

    @terran

    I don’t use the PACT tablets for primarily the same reason. Not being a scientist, I err on the side of caution.

    Great podcast. Thank you for the advocacy. I feel woke. In other words, I learned something useful.

    #3841812
    Tom K
    BPL Member

    @tom-kirchneraol-com-2

    No easy answers here.  I am not inclined to worry about introducing new organisms into a specific environment.  Each has evolved in its own specific environment with its own complement of companion organisms, soil type, Ph level, temperature, rainfall, etc, and is unlikely to be able to establish itself in a totally new environment.  The possibility of introducing new chemicals, e.g. birth control pills, OTC drugs, RX drugs, micro plastics, etc, is however, a matter of concern I had not previously considered.  Tough choices ahead as increasing number of humans venture farther and farther into the backcountry.

    #3841814
    Terran
    BPL Member

    @terran

    The Colorado trail is ~500 miles with ~500 thru hikers and takes ~35+ days to complete. If each hiker digs 34 catholes. 34 CH x 500/500= 34 catholes per mile of trail per year, if it were spread out and there were only thru hikers. IDK. What’s grosser? Meeting someone on trail with a well contained bag of poop or walking through it? Digging into it. Sleeping over it. No thanks.

    #3841830
    John “Jay” Menna
    BPL Member

    @jaymenna78734

    Locale: 30.3668397,-97.7399123

    When I first saw the subject matter, I thought, “This is going to be a snoozer.” But then it completely changed my mind. It made me think deeply about a topic I never would have considered before. Ryan, keep pushing into these weird corners. It’s compellingly interesting.

    #3841835
    David D
    BPL Member

    @ddf

    Ryan, keep pushing into these weird corners. It’s compellingly interesting.

    Ditto!  The recent weather-forecast podcast was enlightening and a great all around nerd-out.  Please keep those coming!

    I was fascinated by Ryan’s effort thesis earlier this summer (beyond just calories) but that one requires a thoughtful protracted deep dive to digest, better done when the world is covered in slush

    #3841925
    Michael Sherman
    BPL Member

    @micshe

    Ryan: thanks for the leadership on this issue, plus sharing your system in the linked Dispatch–makes it seem more feasible!

    Question on your linked Sept 7 Dispatch: you quote “extensive reduction in fecal indicator bacteria was observed in only the arid and alpine environments” (Ells & Monz, 2011). Isn’t extensive reduction a good thing? What am I missing here? Thanks!

    #3841926
    Terran
    BPL Member

    @terran

     

    Surface disposal of human waste by the smear method, a suggested but heretofore unexamined technique, was tested in three environments and examined for reductions in fecal mass and fecal indicator bacteria. Substantial reduction in fecal mass was observed after six and fourteen weeks of exposure in all environments, but extensive reduction in fecal indicator bacteria was observed in only the arid and alpine environments. Although surface smears appear favorable to cathole techniques in terms of indicator bacteria reduction, the application of this method is limited by several other factors common to backcountry sanitation situations. It is therefore likely that surface disposal would only be applicable in very remote, low use, alpine and arid settings where lack of soil development precludes the use of catholes and carry-out techniques are otherwise impractical.

    https://pubmed.ncbi.nlm.nih.gov/21168261/

     

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