It is recommended a scratching post be available for your cat to keep their claws in good condition for climbing and defending themselves. This will also reduce the chances of your furniture being scratched.
Cats like to be clean at all times. As a result, cats can easily be toilet trained if a litter tray filled with dry earth, sand, or cat litter is available. The litter tray should be cleaned daily to remove faeces and the litter itself changed frequently. Ensure the litter tray is placed in a quiet and private location. You may even need multiple trays if you have more than one pet cat. A good rule of thumb is one tray for each cat plus one extra.
All cats need to exercise. As cats naturally like climbing and perching themselves up high, trees and fences, for example, provide good opportunities for them if they have outdoor access. Indoor cats, however, will use furniture to climb and perch.