My DM, 80, is a heavy smoker but wants me to wash the internal glass, especially the ceiling of her 6 year old conservatory prior to the fitting of ceiling blinds.
For mine, I use a combination of warm water, detergent and vinegar which I sponge on, then 'blade' off, then finish with newspaper but I suspect that won't cut it with nicotine stains will it? I am wondering about sugar soap.
What do you think? Apart from 'Won't the blinds look manky in a year's time, too?',..... 
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