Feliway Classic by Ceva Sec is a synthetic copy of the feline facial pheromone, which promotes the well-being of cats, especially when faced with changes in their environment or situations that may cause stress. This stress manifests itself with changes in behavior and the appearance of inappropriate behaviors, such as urine marking, scratching, aggression, changes in appetite, hiding, etc. Feliway Classic can be used to help your cat feel safe and comfortable in the environment during potentially stressful situations. It is recommended in case of urine marking: minimum 1 month. Changes in environment (new family members (babies, pets, etc.), renovations/new home): start using it at least 24 hours before the changes and continue for at least one month. Stressful times (holidays, parties, firecrackers, thunder): Start using at least 24 hours before the stressful times and continue for at least 1 week. Arrival of a new cat at home (prevention of inappropriate behavior and marking with urine and scratches): recommended to reduce the general stress level Cats: Place it in the room where your cat or cats spend the most time. Screw the refill onto the diffuser and plug it into the power outlet. One diffuser for 50-70 m2. For larger spaces, we recommend using two diffusers. Duration: approximately 30 days (48 ml). The diffuser must be kept plugged in at all times. In an upright position. Every 6 months of continuous use or 6 refills used, the diffuser must be renewed. Do not plug in behind or under furniture, in highly ventilated areas, or into multiple sockets or extension cords. Use only with a voltage of 220 V-230 V. Never use with a voltage adapter or converter. The electric diffuser has heated surfaces to evaporate the active ingredients, and these surfaces should not be touched during use. Do not cover it or place it under furniture. This could reduce or block the product's diffusion and leave marks. Plug it in away from drafts for optimal flow and diffusion of pheromones. Store in a cool, dry place.