We had been storing our jugs of muriatic acid in the garage. However, because the kids now play in the garage, and because my wife is scared of fumes escaping the bottles, she asked (or, more accurately, directed) me to store them in a bin outside. Is this safe in Houston? I left the plastic bin open somewhat to allow air to enter and escape. Any other ideas? Aside from the garage, we don't have a pool house to store this stuff.