Answer:

Make sure you keep the lights off in and around the pool at night as this attracts bugs and the bugs attract the frogs. You can also spray the area around the pool with vinegar or salt water. These solutions are a mild irritant to the frogs and will send them running in the opposite direction. Last, it is a good idea to keep the pool covered at night to discourage the frogs from going for a swim. The ones that get on the cover are easier to remove and relocate.