The EarthBox Automatic Watering System has been designed especially to ensure your EarthBoxes always have a constant supply of water, whether you're at home or away. It screws directly on to your garden tap and doesn't require any electricity supply or battery so it's child and pet friendly.
The patented valves sense the water level in the EarthBox reservoir so that when it drops the valve drip feeds water until the reservoir is full. It won't overflow and, because the EarthBox controls the amount of water your plants receive, it won't overwater.