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Shocking a swimming pool is not telling it you are leaving your job to join the circus (that's how you shock your parents). Pool shocking is actually a much needed process you should try and do at least once a week. Though, if you're a family of heavy swimmers you might want to consider doing it a bit more frequently.
The purpose behind pool shock treatment is to make sure everything is chemically balanced in your pool. This pool chemical comes in powder form (which you just sprinkle in the pool).
*Just to be on the safe side go with granny's revised eating/swimming motto, “No swimming right after you eat—or after shocking the pool!”