Just catch a mice on my pool, what are the risks?

Pulling out a live mouse won't harm your pool. Its when you find a dead one and don't know how long its been there that you would need to raise the FC level, and that is more for peace of mind than anything else.
 
Over the years, i have found dead birds, mice, and even chupmunks in my pool. I always brought it up to shock level overnight. We have never had any ill effects from the dead animals. i might shock longer if they had started to decay.
 
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