My furnace has electrostatic filters and I put them in the dishwasher to clean them. That removes a lot of soot and dirt, but after I remove filters from the dishwasher I notice that the blades of the filter still have a fine layer of soot particles. I have to clean each blade by hand -- and it's not possible to go deep between the blades to properly clean each blade (and the blades are sharp too!).
Is there a better way to clean these filters?
Thanks for your help!