Help with my windows that get sprayed with the polaris!?

We have floor to ceiling windows that are visible through our house to the pool outside. For some reason this year, the polaris is squirting them more often leaving streaks. I windex them 2 a week but the next day it is back. I saw a commercial for Windex window washer. What would keep them from streaking even when they do get squirted. I was thinking Rain X?? Thanks