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Sanitisation of dog faeces through home composting
Emily Bryson1, Lisa Bricknell2, Ryan Kift2
1Central Queensland University, College of Science and Sustainability, School of Health, Medical and Applied Sciences, 44 Greenhill Rd, Wayville, SA 5032, Australia.
Waste Management (New York, N.Y.)
|March 17, 2026
Summary
Home composting of dog faeces is safe for gardens when composted properly. Compost stability, not just temperature, is key to eliminating pathogens like E. coli and Salmonella, making dog waste a viable soil amendment.
Area of Science:
- Environmental Science
- Microbiology
- Waste Management
Background:
- Home composting is promoted for organic waste recycling.
- Dog faeces are often deemed too hazardous for home composting due to pathogen risks.
- Limited evidence exists on sanitizing dog faeces for safe use in food gardens.
Purpose of the Study:
- To evaluate pathogen reduction in dog faeces composted outdoors at ambient temperatures.
- To explore factors influencing sanitation, such as temperature and biological stability.
- To determine if dog faeces compost can be safely used as a soil amendment for edible plants.
Main Methods:
- Conducted two pilot-scale (25 L) and one household-scale (160 L) composting trials.
- Composted dog faeces outdoors at ambient temperatures, measuring process parameters.
- Assessed pathogen reduction (E. coli, Salmonella spp., Campylobacter spp.) and compost stability.
Main Results:
- Pilot Trial 1 (7 months) produced unstable composts exceeding pathogen guidelines.
- Pilot Trial 2 (15 months) and the household trial (12 months) yielded stable, pathogen-free composts.
- Compost stability, microbial competition, and processing time were crucial for pathogen inactivation, not just temperature (below 55°C).
Conclusions:
- Properly composted and stabilized dog faeces can be transformed into a low-risk soil amendment.
- This challenges assumptions about the hazards of home composting dog waste.
- Findings expand sustainable waste management options for dog-owning households.
Keywords:
Compost stabilityDog faecesFood borne bacteriaHome compostPathogen reductionSoil transmitted helminthsMore Related Videos
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