I'm using the larger size, so I haven't used this one, I just got it wet. Set of 4. Manufacturer: Picta For various insects such as crickets, bell crickets, ants, and cockroaches. For reptiles such as geckos (small species) and their young. ● This is a small water dispenser for small insects and reptiles. ● Water does not leak, and creatures can drink from the moistened string. ● The string uses a strong special fiber, so it won't be bitten through by the strong jaws of crickets. ● The water-absorbing part is blue, which is easy for creatures to recognize. ● It is low in height, so it can be installed in flat cases. ● It is also very convenient for raising ants, which require humidity. Diameter 4 x Height 3 cm ● Open the lid and add water. (Please do this in a place where water leakage is acceptable.) ● Close the lid tightly to prevent air from entering. (Water will leak if the lid is not closed properly.)