~One man’s opinion / observations ~
A few possible solutions as you’ve stated the glass (have you tried a glass polish?) and wipers have been cleaned:
a)Apply 303 Wiper TreatmentTM to the wiper blades to clean, restore suppleness, eliminate wiper noise or `skipping' and to avoid glass smearing
b)Aquapel® Glass Treatment:
Application Methodology:
·For use outdoors only in non-windy conditions, wear plastic gloves, do not breath fumes from applicator.
·Place on glass, squeeze the two handles of the packaging until you hear a crack, spread on glass surfaces, let it sit for a minute and it will bead up.
·Using lint-free- paper towels wipe glass; remaining haze will dry to a clear glass.
·Dispose of packaging, gloves and towels into a childproof container outside.
·Wash hands after use, product contains chemicals so keep away from children
·Avoid any unnecessary contact with liquid do not ingest liquid
~Hope this helps ~
* justadumbarchitect so I question everything *
Experience unshared is knowledge wasted…/ Jon