To most pets, Bitter YUCK!® Pet Bitter Spray has an unappealing taste, making chewing on the particular sprayed object unpleasant, thus decreasing the unwanted behavior. Due to the complexities of taste preferences and behavior issues, results may vary. It is important to monitor your pet's reaction to Bitter YUCK!®. Be sure your pet is deterred by the taste before leaving them alone with the sprayed object.