How to Poop in a Bag: WAG Bags, Ostomy Pouches & More

Pooping in a bag is straightforward once you know the setup, whether you’re in the backcountry, dealing with a plumbing outage, or managing an ostomy pouch after surgery. The method depends on your situation, but the core principle is the same: contain the waste, neutralize odor, and dispose of it safely.

Using a WAG Bag Outdoors

WAG bags (Waste Alleviation and Gelling bags) are the standard for outdoor waste disposal when you can’t dig a hole. Many national parks and wilderness areas require them in alpine zones, desert environments, river corridors, and anywhere the soil is too thin or rocky for waste to decompose properly. Even where catholes are allowed, high-traffic areas often have too many visitors for burial to be sustainable.

A WAG bag comes with an inner collection bag, an outer sealable bag, and a dose of gelling powder. The powder is a non-toxic, polymer-based absorbent (similar to what’s inside disposable diapers) mixed with an organic decay catalyst and an odor neutralizer. When waste hits the powder, it gels liquid, encapsulates solids, kills smell, and starts breaking everything down.

Step by Step

Open the inner bag and either hold it beneath you or place it inside a portable toilet frame or bucket. Some people fold the bag’s edges over the rim of a small bucket to keep it open and stable. Squat or sit, do your business directly into the bag, and drop your toilet paper in after. Squeeze out excess air, seal the inner bag, then place it inside the outer bag and seal that too. The gelling agent solidifies liquid waste almost immediately, which prevents leaks and locks in odor even during hours of transport in a backpack.

For privacy, a pop-up shelter or tarp works well. Pick a spot at least 200 feet (about 70 large steps) from trails, campsites, and any water source.

The Emergency Bucket Method

When plumbing fails during a natural disaster, power outage, or pipe freeze, a two-bucket system is the most practical DIY approach. The City of Wilsonville, Oregon, recommends this setup for emergency preparedness.

You need two large buckets, heavy-duty 13-gallon garbage bags (0.9 mil thickness or thicker), toilet paper, and a layering material like sawdust, bark chips, or dry leaves. A snap-on toilet seat that fits a 5-gallon bucket makes a big comfort difference and costs just a few dollars at hardware stores.

Use one bucket for urine only. Line the second bucket with a garbage bag, and use that one for solid waste. After each use, cover the waste with a generous handful of your layering material. The sawdust or leaves absorb moisture, cut down on odor, and create a barrier that keeps flies away. When the bag reaches about halfway up the bucket, tie it off, place it inside a second garbage bag, and seal that one too. Store double-bagged waste away from food, water, pets, and anywhere flies or rodents can reach it.

Separating urine from solids is the single biggest thing you can do to reduce smell. Urine mixed with feces is what produces the worst odor. Keeping them apart also means your solid-waste bags fill up much more slowly.

How to Dispose of Bagged Waste

Commercial WAG bags with gelling powder are designed for regular trash disposal. Riverside County’s waste guidelines confirm that human waste in quantities under 10 pounds can be double-bagged and thrown out as routine refuse. Most municipal landfills accept it the same way they accept diapers.

If you’re on a multi-day backpacking trip, carry used WAG bags in a dedicated stuff sack or dry bag until you reach a trailhead trash can. The gelling agent keeps odors sealed inside, so you won’t smell anything during transport if the bags are properly closed. On river trips, a self-contained portable toilet (sometimes called a “groover”) is often required, and you’ll dump the contents at designated waste stations at the takeout point.

Using an Ostomy Pouch After Surgery

If you’re pooping into a bag because of an ostomy (a surgically created opening in the abdomen), the process is different. Your stoma, the small round opening on your belly, diverts waste from your intestines directly into an external pouch. The bag attaches to your skin with an adhesive wafer or ring seal.

Changing the Pouch

Gather everything before you start: a new pouch, scissors, a measuring card, skin wipes, stoma powder, stoma paste or a ring seal, a pouch clip, and clean towels. Wash your hands thoroughly, including between fingers and under nails.

To remove the old pouch, press gently on the skin around your stoma with one hand while peeling away the adhesive seal with the other. If the seal resists, special adhesive-remover pads make this easier. Place the used pouch in a bag and toss it in the trash.

Clean the skin around your stoma with warm soapy water and pat it completely dry. Check the skin’s color: pink or red is normal, and a small amount of bleeding is nothing to worry about. Purple, black, or blue skin needs medical attention. Wipe the area with a skin-prep wipe. If any spots are damp or irritated, sprinkle a light dusting of stoma powder on just those areas, then dab the skin wipe over the powder again. Let everything air-dry for a minute or two.

Use your measuring card to find the circle that matches your stoma’s size, then trace and cut that size onto the back of your ring seal. Smooth any rough edges so they don’t irritate your skin. Attach the pouch to the ring seal if you’re using a two-piece system. Peel the backing off the seal, apply a bead of stoma paste around the hole (or press a pre-formed stoma ring into place), and center it evenly over the stoma. Hold it firmly for a couple of minutes. Pressing a warm, damp washcloth over the seal helps the adhesive bond to your skin. Close the bottom of the pouch with the clip or velcro closure, and wash your hands again.

Living With an Ostomy Pouch

Most people empty their pouch several times a day rather than changing the entire adhesive setup each time. You simply unclip the bottom, drain or squeeze contents into the toilet, wipe the opening clean, and re-close it. A full wafer change is typically needed every three to five days, or whenever the seal starts to loosen or leak. Keeping the skin around your stoma clean and dry is the most important factor in preventing irritation and getting a good seal each time.

Hygiene Tips That Apply to Every Method

Hand hygiene matters more than anything else. Soap and water is ideal. If you’re outdoors, carry a small bottle of hand sanitizer with at least 60% alcohol as a backup. Keep sanitizer, wipes, and bags in a dedicated “poop kit” so you’re never scrambling.

For outdoor and emergency situations, bring more bags than you think you’ll need. One WAG bag per person per day is the minimum for backpacking trips. For emergency preparedness at home, plan for at least one heavy-duty bag per person per day for solid waste, and stock enough sawdust or cat litter to last a week.

If you’re using improvised bags rather than commercial WAG bags, always double-bag. A single garbage bag can tear or develop micro-punctures, especially during transport. Thicker contractor bags (3 mil or more) are the most puncture-resistant option. Commercial WAG bags with gelling agents are worth the cost for backcountry use because they instantly solidify liquid, which is the main cause of leaks and spills in improvised setups.