I've read all the suggestions for cleaning hard water marks off windows. They all sound worth trying and I will. But when your windows are clean, and the sprinkler is scheduled to go on again in an hour or so, what can you apply to the window to prevent more hard water stains? Is there a clear spray or something? If not, there ought to be!
By Pat R
The best things I have found to prevent water spots is rainx or carnauba wax
