Waste Management

When municipal waste collection stops, waste accumulates rapidly and creates serious health and fire risks within days. A family of four generates roughly 4–6 lbs (1.8–2.7 kg) of waste per day. Without a plan, that's 120–180 lbs (54–82 kg) of mixed waste per month — a vector for disease, vermin, and structural damage to your shelter.

Effective waste management in grid-down scenarios requires sorting waste by type at the point of disposal, processing each stream appropriately, and maintaining separation between human waste, hazardous materials, recyclables, and organics. This page covers the full operational workflow.

Related: Sanitation Systems covers human waste (blackwater and greywater) specifically. Composting covers thermophilic composting for kitchen scraps in the context of food production.

Step 1: Waste Audit — Know Your Streams

Before implementing any system, categorize your household waste for one week to understand volumes and composition. Typical household waste breaks down approximately:

Stream	% of Total Waste	Management Method
Food organics (wet)	30–40%	Composting or vermicomposting
Paper and cardboard	25–30%	Burning (dry) or composting
Plastics	10–15%	Storage for future recycling; limited burning
Glass	5–8%	Crushing and burial or storage
Metals	5–8%	Storage; scrap value
Textiles	2–5%	Repurpose, burn (natural fibers only)
Hazardous	1–3%	Separate storage; never burn
Human waste (wet)	—	Sanitation system (see Sanitation)

Action: Set up 4–6 clearly labeled bins or containers (cans, buckets, or bags) at your waste generation point. Label them: Organics, Paper/Cardboard, Plastics/Metal/Glass, Hazardous, and Ash. Maintaining separation at source is far easier than sorting mixed waste later.

Step 2: Organic Waste — Composting

Organic kitchen scraps (fruit and vegetable peels, coffee grounds, eggshells, tea bags, cooked grain, cooked vegetables) should go directly to a compost system rather than accumulating in trash.

Outdoor Compost Pile or Bin

A standard hot compost pile produces finished compost in 4–8 weeks when managed properly. The fundamentals:

C:N ratio target: 25–30:1 by weight. High-carbon materials (straw 80:1, dried leaves 60:1, cardboard 400:1) balance nitrogen-rich kitchen scraps (C:N 15:1) and fresh grass clippings (C:N 17:1)
Pile minimum size: 3 × 3 × 3 ft (0.9 × 0.9 × 0.9 m) — below this minimum, it won't heat up reliably
Temperature: Target 130–160°F (54–71°C) at core for pathogen kill. Turn when the core temperature drops below 110°F (43°C)
Moisture: Wrung-out sponge consistency — roughly 50–60% moisture

What to compost: vegetable scraps, fruit, eggshells, coffee, tea, grass clippings, leaves, straw, shredded cardboard, wood chips, sawdust in moderation

What NOT to compost (in basic open pile): meat, fish, dairy, cooked food with oils, human or pet waste (use separate system per Sanitation), diseased plant material

Cost: A basic compost bin from lumber and chicken wire runs $20–$50 in materials. Commercial plastic bins: $30–$80. Tumbling composters: $80–$200.

Vermicomposting (Worm Bins)

Vermicomposting works indoors or in a garage and is ideal when space is limited or when composting outdoors is not feasible. Red wriggler worms (Eisenia fetida) process food scraps directly into high-quality castings.

Setup — Step by Step:

Container: Use a 10–20 gallon (38–76 liter) plastic tote with lid, or a dedicated worm bin (affordable). Drill 1/8 in (3 mm) holes around the upper rim for ventilation and in the bottom for drainage.
Bedding: Shred newspaper, cardboard, or dried leaves into 1–2 in (2.5–5 cm) strips. Moisten to wrung-out-sponge wetness. Fill the bin 4–6 in (10–15 cm) deep with bedding.
Add worms: Start with 1 lb (0.45 kg) of red wrigglers per pound of weekly food waste. Average household generates 3–5 lbs (1.4–2.3 kg) of compostable food waste per week, so start with 1–2 lbs (0.45–0.9 kg) of worms (affordable from a worm supplier or online).
Feed: Bury food scraps 2–3 in (5–7.6 cm) deep in the bedding to prevent odor and fruit flies. Alternate feeding locations each week. Avoid: citrus, onions, garlic (repels worms), meat, dairy.
Harvest: After 2–3 months, worm castings (rich, dark, earthy-smelling compost) accumulate at the bottom. Harvest by pushing material to one side, adding fresh bedding and food to the empty side, and waiting 2 weeks — worms migrate toward the food. Remove the finished castings.

Worm bin maintenance: - Keep temperature between 55–77°F (13–25°C). Below 50°F (10°C), worms slow dramatically. Above 84°F (29°C), they begin dying. - If the bin smells bad, the C:N is off — add more dry carbon (shredded cardboard) and reduce food additions for 1 week - If dry, lightly mist with water. If too wet, add dry bedding and ensure drainage holes aren't blocked.

Field Note

A well-maintained worm bin produces 2–3 lbs (0.9–1.4 kg) of castings per pound of worms per month. Worm castings diluted 1:4 in water make a high-nitrogen liquid fertilizer — particularly valuable for container gardens when commercial fertilizers are unavailable. Keep the worm bin in a stable-temperature location such as a basement or interior room.

Step 3: Paper and Combustible Dry Waste — Burn Barrel

Paper, cardboard, and dry natural-fiber materials can be safely burned where regulations permit. Open burning is prohibited in many jurisdictions without a permit, and some states ban it entirely. Confirm local rules before setting up a burn barrel.

Burn Barrel Setup

A burn barrel is a 55-gallon (208-liter) steel drum converted for controlled paper and cardboard burning:

Source a drum: Salvaged steel drums ($0–$30 from industrial surplus, farms, or Craigslist) or new 55-gallon drums ($40–$80). Ensure drums previously held only food-safe materials or water — never burn in a drum that held petroleum, solvents, or chemicals.
Drill or punch ventilation holes: Use a 1/2 in (12 mm) drill bit or cold chisel and hammer to create 10–12 holes around the lower 6 in (15 cm) of the drum. These are intake air vents. Without them, burning is slow, smoky, and incomplete.
Create a screen lid: Cut a piece of 1/4 in (6 mm) galvanized hardware cloth into a circle that sits inside the top of the drum, or fabricate a wire screen cover. This prevents burning embers from escaping — a critical safety measure.
Site the barrel: Place on bare earth or gravel, at least 25 ft (7.6 m) from structures, dry grass, or stored materials. Keep a water source (full bucket or hose) within reach. Never burn in high wind or during fire weather watches.
What to burn: Dry paper (newspaper, office paper), cardboard (remove plastic tape first), brown paper bags, natural fiber materials (cotton, wool). Never burn plastics, treated wood, foam, rubber, painted materials, electronics, or coated paper — all produce toxic emissions.
What NOT to burn: Plastics (release dioxins, furans, benzene), treated lumber (arsenic, chrome), foam (styrene), colored ink-heavy paper in large quantities (heavy metals in pigments), food waste (odor, smoke, pest attraction).

Alternatives to Burning

Shredding and composting: Newspaper, plain cardboard, and paper towel tubes compost readily when shredded. Add to the compost pile as carbon material.
Biochar production: A more controlled burn in a reduced-oxygen container (TLUD stove) produces biochar — stable carbon that improves soil permanently.
Paper brickettes: Soak paper, compact in a press mold, dry, and use as fuel. Paper brick presses are affordable online.

Step 4: Biodegradable Waste Burial (Cathole Method)

For small amounts of organic waste (food scraps, paper, human waste) in field or dispersed camping situations where no fixed system exists:

Cathole Procedure

Select site: At least 200 ft (61 m) from water sources, campsites, and trails. Choose an area with absorbent soil and direct sunlight for solar pasteurization.
Dig the hole: Use a trowel or digging stick to create a hole 6–8 in (15–20 cm) deep and 4–6 in (10–15 cm) in diameter. This depth puts waste in the biologically active soil layer where decomposition is fastest, while keeping it below typical root disturbance.
Deposit waste: Place organic waste or waste paper into the hole. Stir with the trowel to mix waste with soil — this dramatically accelerates decomposition by increasing soil microbe contact.
Cover and disguise: Fill with the original dirt, tamp lightly, and scatter leaves or duff to naturalize the surface. Mark mentally or with a small stick so the area isn't reused for at least 2 years.
Spacing: Space catholes at least 6 ft (1.8 m) apart. In a fixed shelter scenario where the same area will be reused repeatedly, a pit privy or outhouse (see Sanitation) is needed rather than catholes — soil cannot absorb repeated single-point deposits.

Step 5: Ash Disposal

Wood ash from stoves, fireplaces, and burn barrels requires careful handling:

Cooling period: Ash retains live embers for 3–5 days. Never store ash in plastic or paper containers. Store in a sealed metal can (a repurposed paint can or metal trash can with lid) for minimum 72 hours before final disposal.
Volume: A cord of wood produces approximately 20–30 lbs (9–14 kg) of ash. This is manageable.
Safe disposal options:
Spread thinly (1/4 in / 6 mm max) on garden beds as calcium and potassium supplement — raises soil pH, which can be beneficial on acidic soil or harmful on alkaline soil. Test pH first (inexpensive test kits).
Mix with compost pile in small amounts (no more than 10% of pile volume by mass — excess ash suppresses microbial activity).
Bury in a dedicated ash pit, 6–12 in (15–30 cm) deep, 25 ft (7.6 m) from structures.
Never dispose of in a waterway — lye leached from ash creates high-pH contamination.

Ash chemical hazards

Fresh wood ash contains lye (potassium hydroxide) and calcium hydroxide — both caustic. Wet ash can cause chemical burns. Wear gloves and avoid eye contact when handling. Ash from treated wood, OSB, or plywood contains heavy metals and should not be applied to soil.

Step 6: Hazardous Waste Management

Never burn, bury, or dump hazardous materials. Even in grid-down scenarios, these materials present long-term contamination risks.

Hazardous Material	Proper Interim Storage	Long-Term Disposal
Used motor oil	Original container, tightly capped, cool dark location	Return to auto parts store (free) when available
Batteries (all types)	Sealed bag, kept cool and dry	Battery recycling center; tape terminals before storage
Propane/butane canisters	Upright in ventilated outdoor storage	Puncture when fully empty; recycle as metal
Fluorescent bulbs (mercury)	Original packaging or wrapped in newspaper, separated	Hazmat collection event
Pesticides, herbicides	Original labeled containers, locked storage	Household hazmat day
Solvents (paint thinner, etc.)	Original containers, cool, sealed	Hazmat day; never pour on ground
Electronics (e-waste)	Separate bin, no moisture	E-waste collection
Medical waste (needles, sharps)	Puncture-proof sharps container (inexpensive)	Pharmacy sharps disposal program

Step 7: Recyclables — Storage for Future Recovery

When collection resumes, sorted materials have value. Store recyclables: - Crush aluminum cans and bundle (some commodity value when markets operate) - Stack glass jars and bottles (reuse first — for food storage, water storage, fermentation) - Bind and bale cardboard for pickup - Separate metals — steel from aluminum — scrap value varies

Clean, separated, dry recyclables have some commodity value depending on material and market; contaminated or mixed materials are worth zero and require landfill disposal.