WD-40 is low toxicity in small amounts but poses aspiration risk if vomited; avoid ingestion and skin contact.
Hydrocarbon-based; primary danger is aspiration pneumonia if ingested and vomited.
Can cause GI upset (vomiting, diarrhea) and CNS depression in large doses.
Skin contact may cause irritation; wash with dish soap if coated.
Keep dogs away during application and until dry.
WD-40 contains aliphatic hydrocarbons (mineral spirits) and CO2 propellant. If a dog licks a recently sprayed surface, the small volume ingested typically causes only mild, self-limiting gastrointestinal upset. The significant hazard occurs if the dog vomits the oily liquid and aspirates it into the lungs, leading to chemical pneumonitis a potentially fatal condition. Large ingestions can cause lethargy, ataxia, and central nervous system depression. Dermal exposure may cause redness or dermatitis; bathe with mild dish detergent (e.g., Dawn) and rinse thoroughly. Never induce vomiting after hydrocarbon ingestion due to aspiration risk. Contact a veterinarian or pet poison helpline if more than a few licks are consumed or if respiratory signs (coughing, labored breathing) develop.
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