The cassette is accompanied by a cleaning vial. None of instructions. I tried to put the vial in the hole or orange I suppose, for want of instructions, that he had put the cleaner. Big Bazaar. Not too much to the vial volatile cleanser that s evaporated at unbelievable speed J have used a syringe to dampen the band: it's getting better after 12 passages the image, but without returning to a perfect result. Finally I saw a tutorial on the internet, I have removed the VCR and cleaned the heads. It does work. In short it is worth the c detergent sold with the tape but can be used alcohol instead. At that price it is expensive and c is crap