Pyrethrins and pyrethroids are used as insecticides and can be found in many domestic aerosol sprays such as Baygon, Mortein and Hovex. Flea treatments available for dogs including “spot-on” treatments and can be very concentrated. Cats are particularly sensitive to these insecticides and even a standard dose for a small dog can be fatal to cats. Cat poisoning symptoms include drooling, tremor and restlessness which can progress to convulsions. Call the Animal Poisons Centre if you suspect your pet has been exposed to a pyrethrin or pyrethroid insecticide.