Toxicity to pets

Paraquat is a highly toxic yet widely used herbicide in both agricultural and non-agricultural settings. In the United States the use of paraquat is restricted; if can only be applied by a trained, certified applicator and it cannot be applied near residential dwellings, home gardens, recreational parks, golf courses or playgrounds. Paraquat ingestion by animals results in severe gastrointestinal injury (e.g., vomiting, diarrhea, abdominal pain, upper gastrointestinal ulceration) followed by severe lung injury and death.