Remove filters. I had alot of greasy build up in mine. Dawn will cut thru that. I had to run dw several times to make sure it was clean. Citric acid or packet of lemon koolaid. I also did the vinegar thing since I had so much grease. I was told to use dw tabs that have the red ball in the middle- “finish” I think it was. Anyway I bought the packs as I couldn’t find the tablets. Tablets work better.