My pool company has recommended Cover Free. I have a free form pool so covering it meant that we did not use it much as I couldn't remove it alone when I wanted to swim. Our nights are cool so I usually just swim in cool water. Now, however, I have 4 grandchildren who need it warmer. My concern is 1. the chemical getting into their mouths when they swim (freshwater pool), and 2. how will the chemical react to sunscreen residue that will also be surface. I suspect they might bond and end up stuck in the filter rather than return to the pool??? Please don't worry about being too technical if you have a response to why or why not either of these questions might be a concern.