On 29 Dec 2007 00:22:10 GMT, (Andrew
Gabriel) wrote:

If they are pyrolytic self-cleaning liners (slightly rough
absorbant surface), then you mustn't clean them this way.
You just turn oven up to max, and they self-clean, leaving
ash at the bottom of the oven to sweep out when cooled.

I shall have a closer look. I still think I need to remove them
because the grease gets behind them (or has done on the side panels).
How long do you have to turn the heat up for? Why don't they clean
each time you do a Sunday roast? Do they actually work and how?

Thanks.