Will exterminator spray kill your cat?

It is unlikely that a typical exterminator spray will directly cause the death of your cat if you have used the product according to the directions. Some exterminator products contain permethrin, and a high dose of this chemical can be fatal to cats. But even if your exterminator spray contains permethrin, your cat would need to ingest a substantial amount of it for it to be fatal. However, it is still crucial to take measures to protect your cat from coming in contact with any sprayed areas, as some cats can be sensitive to any chemicals.