Automatic watering: The plant waterer regulates watering and promotes healthier roots. This makes gardening easier and makes plants healthier. Perfect design: Plant spikes fit most water and soda bottles, such as plastic bottles. - You don't need to hire a caretaker to water your plants while on vacation. Enjoy your vacation. Suitable for outdoor and indoor use: Made of high quality ceramic material, good permeability and weather resistance, durable for long life. Extra long pegs for a stable device. Easy to use. Long durability: On average, a stake with a 1 liter bottle lasts 5-7 days, compared to most other stakes that last 2-3 days. The secret is in the ceramic.