These will work like regular mud puddles but have a few more features and will not evaporate. Keep in mind that they will keep your harvestable watered but will not bring it back if it's dried out.
The main reason I made these was to keep plants that require constant moisture watered for any harvestables that require lots of water. I kept all the major functionality of Mud Puddles and added some additional interactions for pets that allow them to play in and drink from them. Dogs can play in them but they'll get dirty super fast!