1. Control of the required drip rate: The selfwatering plant devices have a control valve, allowing you to adjust the drip rate between 0 60s/Drop for a consistent liquid supply. This ensures optimal moisture for your plants, whether for indoor plants with selfwatering spikes or outdoor gardens. 2. Effortless installation and use: The automatic plant waterer is compatible with most beverage bottles (500 ml 2000 ml) and doesn't require complicated setup. Just align and insert the selfwatering planter into the soil. 3. Extended water supply for vacation care: These automatic water dispensers for vacation can maintain water release for 3 20 days depending on the bottle size, providing reliable plant watering during vacation. 4. design: These drip irrigation inserts made of highquality plastic are designed for repeated use and can resist both heat and cold. Recycling plastic bottles as part of your plant watering system helps reduce waste while taking care of garden, deck, or indoor plants.