from use on my 9 inch Klein lineman/electrician pliers. I have 2 pair of these Klein's and I just happened to have the ones with the light blue plastic grips in the house for a project. There was black gunch/crud/dirt on both handles. Just on a hunch I grabbed the Klein pliers went into the kitchen put 2 or 3 drops of Dawn dish detergent on a paper towel and commenced to scrubbing on the handles. In a few minutes I had 90% of 45 + years of crud scrubbed off those handles. I took an old tooth brush and now have over 99% of the crud off. The bit this is left is Really there! I've got more tools with plastic handles that Will receive the Dawn clean up treatment. I Know they save oil soaked wild life with Dawn and now i/we Know it will clean up old tools!

How kewl is dat? RIDE SAFE.