1. Water purification effect The water dispenser is fully open, and every day all kinds of dust, bacteria, especially cat hair. 2. Easy to clean The water dispenser should be cleaned and changed regularly, and the water dispenser with a simple structure is more friendly to the handicapped. 3. Electricity safety The water dispenser must ensure the safety of electricity use. Pay attention to whether the power adapter they are equipped with is three-plugged to avoid the problem of induced electricity in the water. 4. The capacity is large enough Especially in multi-cat households, it is not necessary to add water every three days to avoid water level anxiety.