Hi Anon,
Yes, you can! A lot of our customers use this product to clean their metal filter covers:
http://www.espares.co.uk/part/cleaning-products/cooker-and-hob-cleaning/p/1422/0/0/0/510028/filterkleen-375ml.html
You spray on and then rinse off. Make sure that they're completely dry before putting them back into the extractor fan.
by
Samara
- 27 November 2009