Southwest Idaho here. Haven't filled my windshield fluid more than once since I moved here 8 years ago... Very little rain. Very little muck on the roads. Minim

Southwest Idaho here. Haven't filled my windshield fluid more than once since I moved here 8 years ago... Very little rain. Very little muck on the roads. Minimal bugs. Park car in the garage every night. When I lived in the Northeastern US I used far more windshield fluid.