Exposure to mosquito coil fumes overnight can indeed pose a poisoning risk to cats.

The potential harm of mosquito coils to cats largely depends on the ingredients used. Pyrethroids, commonly found in mosquito coils, while effective at killing and repelling insects, are also potentially harmful to humans and especially toxic to cats. Ventilation is always recommended when using mosquito coils, even for humans. Cats, being more sensitive, can suffer severe consequences from prolonged exposure to these chemicals, especially in an enclosed space. In mild cases, cats might exhibit symptoms like respiratory distress or sneezing. However, more severe cases can present with lethargy, loss of appetite, excessive drooling, drowsiness, and in extreme circumstances, hypothermia, seizures, and opisthotonos (a severe form of muscle spasm). Acute kidney or liver damage, which can be fatal, may also occur. If you observe any of these symptoms, immediate veterinary attention is crucial. Pet owners should carefully inspect the ingredients of mosquito coils before using them. Ensuring good ventilation while using such products is vital. For cat flea and tick prevention, it is recommended to use fipronil-free external parasite control treatments. The risk of mosquito coil poisoning in cats highlights the need for responsible pet ownership, careful product selection, and an understanding of pet health needs. Prioritizing the well-being of our feline friends requires vigilance and awareness of potentially harmful household items like mosquito coils.