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the claim
Cockroaches are clean animals that groom themselves constantly.
the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 2 against
Is it true that Cockroaches are clean animals that groom themselves constantly?
Partly. One study documents that American cockroaches spend substantial time grooming, supporting the grooming half of the claim only in part. Two reviews note that cockroaches carry pathogens acquired from sewage and waste, which cuts against describing them as clean animals.
Verdict: CONTESTED PARTIAL · 1 source for, 2 against · Last checked
Evidence for · 1
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Grooming Behavior in American Cockroach is Affected by Novelty and Odor - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1155/2014/329514
Evidence against · 2
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A, D. & NS, B. (2026). Cockroaches as Vectors of Pathogens and Antimicrobial Resistance: Evidence from Healthcare, Community, and Agricultural Settings.. doi.org. https://doi.org/10.3390/insects17030310
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More against · 1
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Richard, K. B., Alexanda, M., & Ladslaus, M. (2024). The Diversity of Hind-Gut Bacterial Microbiome of House Rats and Cockroaches: An indication of Public Health Risk for Residents of Semi-urban and Urban Morogoro, Tanzania. zenodo.org. https://doi.org/10.5281/zenodo.13621379
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