FELIWAY Diffuser enables reactions to stressful situations to be controlled and avoided. Reactions to Stress Are Expressed As: Urine marking, vertical scratching, loss of appetite, reduced desire to play, reduced desire to interact. Use FELIWAY in the Following Stress-Inducing Situations: Moving to a new house, visits to the veterinarian and return from hospitalization, adoption, rearrangement of furniture, vacation homes, introducing new arrivals, overcrowding.