J H Edwards, Christchurch.

The best hint I was ever given is this. After de-frosting your freezer, out some glycerine on a cloth or paper towel, and rub this over all surfaces. The next time to need to de-frost, the ice will fall off quickly in big chunks, saving time and effort and much easier clean-up too. I used cooking oil last time as I had run out of glycerine, and it seems to work just as well.