For ethylene glycol: Death may occur within the first 24 hours. If the patient survives, there may be little or no urine output for several weeks before the kidneys recover. Kidney damage may be permanent. Any brain damage that occurs also may be permanent.

For methanol: Methanol is extremely toxic. As little as 2 tablespoons (1 ounce or 30 milliliters) can kill a child, and 4 to 16 tablespoons (2 to 8 ounces or 60 to 240 milliliters) can be deadly for an adult. The outcome depends on how much was swallowed and how soon appropriate care was given. Vision loss or blindness may be permanent

Permanent damage to the nervous system may occur. This can cause blindness, decreased mental functioning, and a condition similar to Parkinson disease.

Keep all chemicals, cleaners, and industrial products in their original containers and marked as poison, and out of the reach of children. This will reduce the risk of poisoning and overdose.