These water bowl drinkers from Little Giant USA automatically dispense continuous supply into the sturdy plastic base. These are good quality items that will last many years. Use indoors or outdoors.
Ideal for dogs, cats and large rabbits.
Available in a 3L (27cm high by 16cm in diameter) and an 8L (38cm high by 22xm in diameter)
Exactly what I was wanting.
Keeps the cat watered with less maintenance.
Little Giant Pet Bowl Drinker