Protect Your Pet from Disulfoton Toxicosis

It is easy to understand why people search for ways to get rid of insects and spiders scavenging on their crops and rose beds. However, it is important to double check the ingredients in the product to avoid those toxic to our pets. Disulfoton is an organophosphate Category I pesticide that has been restricted by the EPA but has not been completely banned.

Although there are no currently active registrations with disulfoton in their ingredients, there are still some products in circulation to be cautious of. These include: Di-Syston, Dimaz, Ekanon, Frumin AI, Knave, Solvigran, and Solivrex. Ingestion of disulfoton can be life-threatening even in small quantities.

Disulfoton Poisoning Signs:

  • Increased salivation
  • Tear production
  • Increased urination and defecation
  • GI distress
  • Vomiting
  • Rapid breathing
  • Tremors
  • Increased heart rate
  • Seizures
  • Death


If your pet has not already started vomiting, your veterinarian will need to induce vomiting to remove any of the product in your pet’s stomach. Your veterinarian will need to hospitalize your pet to run diagnostic testing and provide supportive care and proper monitoring. Unfortunately, prognosis is generally poor depending on the amount ingested and treatment response.

We know how important the health of your pet is to you! If you know or think your pet may have ingested any amount of disulfoton, it is important to stay calm and quickly contact your veterinarian or Pet Poison Helpline for guidance.



Written by:

Miranda Gibbon, Pet Poison Helpline DVM Student Extern Kansas State University Class of 2024

Samantha Koch, CVT, Veterinary Information Specialist II, Pet Poison Helpline