One of the things I recently added to my arsenal for my ongoing vinyl restoration project was some deep-groove record cleaner. It's called the Disc Doctor's Miracle Record Cleaner, "For the Sound Your Thought You Bought." When I first came across it I thought it sounded rather like snake oil. But the testimonials I read were quite convincing, and I've been able to obtain encouraging results.
When I first started using it I would record (sample) an LP into the PC prior to throwing the cleaning chemicals on it. This was just in case the cleaner made things worse. I now trust that it does not add any noticeable residue to the disc surface, and does quite a good job of removing debris from the groove. For comparison I compared the number of clicks detected by Wavecor on one side of a record, using a click detection level of 2. The number of clicks was reduced from 4,093 to 2,401, before and after cleaning. That's a reduction approaching 50%.
Unfortunately many of the clicks one hears on a record are flaws and damage to the groove walls. These cannot of course be removed using cleaner. Depending on the quality of the vinyl material, I've concluded that micro fissures develop in the groove over time. I heard somewhere that this is due to the elastomers in vinyl material drying out. Apparently this phenomena is acerbated by the past use of isopropyl alcohol for record cleaning. For about five years I used a cleaning cloth slightly dampened with a 50/50 mix of demineralized water and isopropyl alcohol. I often wonder if this added to the deterioration of some records in my collection. But then LPs I have borrowed on occasion are often just as bad. Clicks also seem to be more prominent in the left channel than the right. This may be because the left wall of the groove is on the outside radius of the record and the right wall on the inside. Thus one is in slight traction, and the other under slight compression. Of course this is just my postulation.
Overall my restoration process hasn't got any quicker, but my results and standards have continued to improve. The improvement is enough for me to consider reprocessing one or two of the early LPs I did. As they say, one pays for education one way or another.
If you're interested in the Miracle Record Cleaner you can visit the web site.
I toyed with the idea of purchasing a vacuum style cleaner; specifically the one manufactured by Nitty Gritty. However, these machines are quite a expensive, and I was unable to justify the cost. As it happens the Miracle Record Cleaner seems to work quite well. The only drawback is that one has to air dry the records for at least half an hour prior to playing them. Also playing the record through at least once prior to sampling it into the PC provides a slight further improvement. I now only use isopropyl alcohol to occasionally clean sticky debris off the stylus.