Human Waste Compost: Why It's Unsafe for Horticulture

Human biosolids and pet waste carry pathogens requiring extreme heat (>140°F sustained) to kill—unachievable in typical composting.

Safe vs. Unsafe Manures

• Safe (composted): Cow, horse, sheep, llama, poultry, waterfowl.
• Unsafe: Human, dog, cat, pig—any meat-eating or omnivorous animal.

Why It Matters

• Human parasites/diseases recycle through our waste.
• Regulations don't always require disclosure on bagged products.
• Home compost piles rarely reach sterilizing temperatures.

Recommendation

Avoid entirely. Use only properly composted herbivore manures.