The swisspet deterrent spray works by emitting an unpleasant odor for cats. Instructions for use: Shake well before use. The areas to be treated should be cleaned of urine and feces. Spray the area from a distance of about 30 cm. Do not spray sensitive objects and plants directly; instead, spray a cloth and hang it near the area. In case of heavy soiling and warm weather, repeat the process 1-2 times a day. Check material compatibility in an inconspicuous area. Note: Use according to the instructions. Harmful to aquatic organisms. Keep out of reach of children. May cause allergic reactions.