Hi Many moons ago, armed with the knowledge that Renuzit was no longer being marketed, I stocked up. I am now out of my precious stash. This was very effective in cleaning knuckles. I now have to clean some cruddy knuckles in a "rebuilt" Steinway. I can not convince the customer to replace them. What is an effective method of cleaning knuckles now? I am considering naptha. Michael Musial RPT Reedsville Pa
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