These are great options for someone who travels frequently or works longs hours and isn´t home much.
Fresh Water
More Appealing – Most people think automatic waterers are only necessary if a cat´s owner is away from home. However, cats prefer running water as a drinking source. An automatic waterer may be a good idea, even if you´re home all the time, especially if your cat eats mainly dry food that has very little moisture.
Things to Consider:

can´t give is love and attention. If you´re going to be gone, even if you´ve got an automatic feeder and waterer, you need to make sure someone visits your cat everyday while you´re gone.