Automatic pet irrigation system with a gravity fed design that refills your pet’s water supply when the water level is low. Food Grade Material: The water dispenser is made of non-toxic and harmless materials. Note: Please do not put in the dishwasher. The PP plastic material is not designed for high temperatures. With a large 2.8L capacity, this handy drinker will keep pets hydrated. Great option for households with one or more pets. No electricity, no noise, make your pets drink safer than electric water fountains.