smearing

Hi, My wipers cause the rain to smear across my winscreen which isn't the best for visibility!:doh: So what's the best way to clean - my wipers (Bosch bought in December) and my windscreen? Wipers - vinegar? Windscreen - Mr Muscle Window? - Toothpaste? - CIF Cream? - Cillit Bang? -...

Hi folks, Have noticed over the last few days that my windscreen smears rather than clears - when I look closely it looks like the winscreen has an oily/greasy surface - however I have cleaned it and don't see how. Is it just the wipers or is there a way to clean the screen properly? I'm...