Yes, you can leave a robotic pool cleaner in the pool all the time. Robotic pool cleaners are designed and built to be safe for continuous use in the water. They are equipped with a power source and are specifically designed to operate in a submerged environment without any risk of electrical hazards. By leaving the robotic pool cleaner in the pool, you can ensure that your pool is constantly cleaned and maintained, saving you time and effort. The robotic cleaner will efficiently remove dirt, debris, and even algae from the pool walls and floor, leaving the water clean and clear. It is a convenient and effective solution for keeping your pool pristine and ready for use at all times.