No, DuPont Virco is a disinfectant product and will not cause poisoning when licked by cats. Cats like the taste of DuPont Virco and will like to lick the place where DuPont Virco is sprayed and even roll around. It is recommended that the owner Isolate or cage cats while using DuPont Virgo. Families raising pets should regularly disinfect and sterilize their home and cat supplies to keep the indoor environment clean.