The best way to clean any type of stain off cement would be to use soap, hot water or a high pressure hose. In worst case scenarios, a scrub brush and stain lifting solution may be needed.
Barbecue grease can be cleaned off by using hot water and detergent. Let the detergent and water mixture remain on the affected surface for about five minutes before scrubbing it with a brush.
A steam cleaner (make sure it gets hot enough to sanitize) will kill off the mold and whatever else is there, then you just use a cleaner like Oxyclean spray to get out the stain.
You can usually just use disinfectant, soap and bleach and that should get it out.
If the coping is made out of cement as well, VERY carefully use a sanding block to remove the cement spots, repainting will probably be necessary unless you have the hands of a surgeon.
Lick it off with your tongue; or a friend's tongue.
Soak in hot water and detergent for a day and then hot wash
Wet it totally, then when it is softer , scrape it with a sharp edged wooden spatula.
Yes, at first it will. But it will easily come off with hot water and if you let the glass object sit with the hot water in it.
I don't know. But I heard from a naturopath it has something to do with magnesium. All I know is that I've been clean since July 8th 2011 and I'm still fiending for chocolate like no one's business. Ah, to nod off inside a doorway with a chocolate bar in one hand. That'd be bliss. By the way. I found out that hot chocolate mix stirred into vanilla yogurt is AMAZING!
Hot water and some scrubbing
Hot water is the worst possible thing for stains. Hot water will cause the stain to set, making it permanent. If you spill coffee, spaghetti sauce, chocolate, anything like that on your clothes, you need to rinse it immediately with ice water. Then use a pre-treater, like Oxi-Clean or those Tide stain pens. THEN you put it in the wash. If the ice water and the pre-treater get the stain completely out, then you can use a regular setting. If the stain is still visible at all, then use the cold water setting.
Hose it off, preferably with warm or hot WATER, (hence the name "water-soluble")