Mobile Fidelity Super Deep Cleaner is made to clean very soiled LPs and is also recommended as a pre-cleaner for extra dirty records. Super Deep Cleaner can be used for removing pressing debris and 'mold release compound' from sealed LPs, as well. It's much more powerful than Super Record Wash and should be used as the first step in your cleaning process. As always, Mobile Fidelity Super Deep Cleaner is made with an exclusive Quad-Distilled, hyper-pure water base with a mild detergent that leaves no residue and cannot damage the surface of your records. We give this product our highest recommendation! Buy mulitple bottles and save.