Never under-water or over-water your plants again! This 8" watering globe saves time and effort in watering both indoor and outdoor plants. Fill with up to 100 ml of water and the globe will automatically release the needed amount of water. Instructions for use: Fill with clean water. Make sure the soil is wet to avoid clogging and insert near the roots of the plant. Refill as needed, and periodically clean to avoid bacteria build-up, using a pipe cleaner, gentle soap, hot water, or baking soda.