logoPROFESSIONAL VERSION

Corn Cellulose Poisoning in Animals

ByDominic Tauer, DVM DABT DABVT, Pet Poison Helpline and SafetyCall International, PLLC
Reviewed ByAhna Brutlag, DVM, DABT, DABVT, Pet Poison Helpline & SafetyCall International, LLC
Reviewed/Revised Modified Nov 2025
v63200897

Corn cellulose–based rodenticides are relatively common and pose little systemic toxicity risk to veterinary patients. Made from powdered corn (maize) or corncobs, these products lead to dehydration, hypovolemic shock, and death when ingested by target species. 

Although some products do contain small amounts of sodium chloride, concentrations are low, averaging 2% (20 mg/g). The typical 28-g (1-ounce) block would thus contain 560 mg (0.56 g) of sodium chloride and would be subtoxic (< 2 g/kg) for nearly all veterinary patients. 

Gastroenteritis may be an expected outcome.

Treatment involves supportive care.

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