YSTD 2Pcs Automatic Drip Waterer Spike Tender Houseplant Plant Indoor Watering System Just soak them in water for a couple of minutes to prepare the tips, then insert the probes into the soil of your potted plants and place the hose ends in a water reservoir nearby. The water will be slowly emitted through the ceramic cones, automatically watering your plants without the need to set timers or worry about electronic devices being turned on while you are away. Using no power source, this high-quality, European-design but made in China plant waterer will automatically keep a potted plant's soil at the optimum moisture level. The spike is used by, just filling the ceramic cone with water, putting the cap on and push the cone into the soil. It's perfect for watering any indoor plant. Great for people who travel and want to make sure their plants are properly watered. Large planters will need two or more plant waterers