Cat urine contains pheromones that the cat uses to mark his territory to demonstrate dominance or to attract members of the opposite sex. But not all marking is done with urine. Cats also secrete pheromones from a variety of other glands on their bodies.The foot pads produce Alarm Pheromones that remind the cat - and warn other cats - to avoid dangerous areas. Pheromones produced in the tail and anal sacs provide information about sexual status for mating purposes.And there are pheromones that make the cat feel calm and secure within his environment. These are facial pheromones. You've probably seen a cat rub his face on objects around the house - or even you. Feliway mimics these natural reassuring feelings in the cat that has a calming effect and reduces the impulse to urine mark or scratch.It's important to continue treatment for 30 days. Marking should cease within that time. In extreme cases, however, "reminder" maintenance sprays may be necessary every 2 to 3 days. If the cat is over 10 years old, spray areas once daily for 45 days. Repeat every 2-3 days for the rest of his life.To prevent sexually oriented marking, it's only necessary to spray the soiled areas - which are normally near exits. If you believe a change in the home may initiate marking, you can prevent it by spraying Feliway on furniture, doors and in the corners of rooms as you would if the cat were marking.To prevent scratching, Feliway should be sprayed once per day on areas of surfaces that could be attractive to the cat (typically surfaces that are fully visible and vertical.)