1. to clean a greasy pan (frying or roasting)
make a thick paste from bicarb (baking soda) and vinegar. Apply liberally over the whole pan and leave it a while. Go watch some tv or have a glass of wine.
When you're ready, rinse the pan with hot water and then wash normally. It should be squeaky clean.
2. to clean glass shower screens and doors
get yourself one of those dish washing wand thingys. You know, the one you fill with dish liquid and it has a foam pad scrubby dohickey on the end?
Well, fill it half and half with vinegar and dish liquid. Scrub it onto the glass and leave as long as possible before rinsing off. (have a glass of wine?)
You may need to do this a few times initially, if the build-up is bad, but it really does work. Then just once a week or so.
(the vinegar does the work. The dish liquid helps it stick to the glass)
Right. Time for wine.