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How to Dig A Cathole

A Leave No Trace Cathole
A Leave No Trace Cathole

If you need to take a poop on a hike and you’re not near a composting privy or toilet, it is recommended that you bury your poop in a cathole so that it can biodegrade, animals won’t dig it up, and it won’t disturb other visitors.

You’d think everyone knew how to dig a cathole to bury their poop, but it’s surprisingly hard to do in certain soil types. That was one of the the main themes of the Leave No Trace Cathole digging lesson I gave on Saturday on an AMC beginner backpacking trip we did in the White Mountains.

If you’re a Leave No Trace Trainer, there’s a copy of the Cathole Lesson Plan I prepared for this exercise at the end of this post. The pine cones worked really well as fake poop.

Cathole Size

In most locations, dig a cathole 6-8 inches deep and 4-6 inches inches in diameter. This can be difficult if the soil is full of rocks and roots like it is in New England, so give yourself a little extra time to find a good spot to dig. It might take you a few tries. In air or desert conditions, dig a cathole 4-6 inches deep and 4-6 inches in diameter.

Where to Dig a Cathole

When digging a cathole, select an inconspicuous site at least 200 feet (70 steps) from the nearest trail, campsite, or water source, including streams, rivers, ponds and lakes. The best sites have deep organic soil with a dark rich color and good exposure to sunlight to aid in decomposition. Avoid areas with water runoff, particularly above water sources, which might erode your cathole and carry your waste  into the local water supply. If you are camping with a large group or for an extended time, make sure to widely disperse everyone’s cathole locations, and use a single cathole for each poop.

Toilet Paper, Wet Wipes, and Tampons

It’s always best to pack out used toilet paper so that animals don’t dig it up and spread it around the area. Use as little as possible and store the used sheets in 2 or 3 ziploc bags to prevent leakage. Stick to plain, unperfumed toilet paper and hang you waste at night to avoid attracting animals scavengers. If local regulations or practice enables burying toilet paper, make sure to bury it in the bottom of the cathole.

Wet wipes, tampons and all other hygiene products should always be packed out with you and disposed of when you get back to civilization. To minimize smells in the ziplocs, mix the waste paper with crushed aspirin.

Burial

After you finish your business, bury your waste with the toilet paper on the bottom if the hole. Fill the cathole with the original soil you dug up and disguise it with leave little and forest duff.

Urinating

When urinating, pee on rocks, gravel, or mineral soil instead of vegetation. This will protect plans from being chewed on by animals looking for salt.

Best Trowels

When digging in ground full of rocks or routes, it’s best to have a sturdy trowel with serrated edges. One of the most economic trowels available is the GSI Outdoors Cathole Sanitation Trowel ($4.95). The GSI is great because it’s lightweight, has inch long measurements embossed on it, and serrated edges to cut through roots and compacted soil. A MSR Blizzard Tent Stake also works fairly well but is more prone to bending ($4.95). Boot heels make poor digging tools in soil filled with rocks and roots.

Cathole Digging Team
Cathole Digging Team

Leave No Trace Lesson Plan – How to Dig a Cathole

Objective

Beginner backpackers and trip leaders will understand the need to dig catholes for proper disposal of solid human waste and experience the difficulty of digging a properly sized cathole in rocky New England forests.

Materials Needed

  • 5 GSI trowels. Students should have brought trowels or other digging tools, but most probably didn’t
  • Shopping bag full of pine cones to simulate poop. These should be collected ahead of time.

Scenario Preparation

  • Find an open but wooded site, off trail. Doesn’t have to be 200 feet in since we won’t be burying actual waste.
  • Count off into 2 person teams, mixing backpacking participants and trip leaders
  • Hand out three pine cones to each group
  • Hand out 5 extra GSI trowels in case students/leaders did not bring their own or want to try something different

Presentation

  • Explain need to minimize impact on plants and animals, do not change their behavior, keep them wild, and preserve experience for others to enjoy
  • Pee on rocks or mineral soil and not vegetation because animal wil chew them to get at the salt.
  • Solid waste disposal using catholes
    • Placement: 200 feet off trail, campsite, or water source (70 steps), and out of the way of water runoff
    • Cathole dimensions: 6 to 8 inches deep, 4-6 inches in diameter, mix ingredients with stick, cover with organic matter, not rock, and disguise with natural materials
    • Toilet paper goes in first, then poo. Alternatively, pack toilet paper out.
    • Feminine products and wet wipes must be hung at night and packed out.
    • Start digging
    • Call out when your hole is completed
    • Instructor to measure depth and dimensions
    • Bury your poo and disguise site.
    • 10 minutes maximum digging time, then recall groups

Group Debrief

      • What did this experience show you?
      • How hard is it to dig a cathole?
      • How much time does it take?
      • How do different tools – tent stakes, etc, compare to a trowel?
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