Over the years I have used almost every blade cleaner mentioned in this thread. Until I bought the Boeshield three pack shown here, that is. Their Resin Gum and Pitch Remover is, in my opinion, second to none. I grab a blade and lay it out on a rag, I spray two or three pumps on the blade teeth, I wait about thirty seconds (at the most) and then I use a stiff plastic bristled grout brush or even a toothbrush, for about thirty seconds, then I flip over the blade and repeat. It is the quickest, best pitch cleaner I have encountered. Crazy fast and easy.