I had around 156 of my favorite LP´s all with dried up white mold ,when buying a new house ,with 70 years or more i thought i knew which were the walls that could need humidity treatment but because the house was looking very good i put the records on a 70´s piece of furniture all made of wood ,kind of a living room shelfs with a central BAR for alcohol but took the part for the botles and whiskey glasses and stayed with six divided shelfs ,each for LP´s storage but having there my favorite records or the ones i was listening more in 2007 i didn´t notice that the wall behind was letting pass the humidity that through the wood of the furniture it was making all those records very dirty with white mold , i have seen of several colours but white was the first time ,when playing a record i notice noises which all my records don´t have any ,maybe because the air in the region where i live is very dry, at the time i felt like if i lost a family menber and when taking to my home a young guy that had a cleaner machine i played a 70´s album of peter gabriel, it was filled with noises but the sound underneath was perfect ,to which he tells me "this record is like new the sound is preserved perfectelly " ,that´s when i understood that his machine wasn´t that good, the second person is a musician ,he plays flute that one was seeing the records and wanting to buy them all he never refered once to his cleaning machine and he was more worried to know if some records were 1st editions, most of them were and i had to sell him some records but i understood that this wasn´t the guy with a cleaning machine it would solve my problems ,i ended up selling amongst others some The Who records and a syd barret lp it came out in the 80´s with a compilation of old known songs but diferent takes and some that were never edited ,Opel was the name ,he tells me that he went to a big vinil store in Lisbon and those records were being sold for prices like from 50 to 100€ and he ofered money and i said yes but again no cleaning machine ,that´s when in Lisbon(Portugal) i talked with some guys that were DJ´s and some even had produced a album from a english artist with great quality but sounding kind of dub with a rythms taken from old trance psychedelic songs they used to mix when being dj´s ,that´s when one tells me that he owns two machines one using ultra-sounds and other from Pro-ject both very expensive ,he cleaned in front of me two records that in my opinion sounded more like destroyd than dirty but after passing the two records twice on both machines they sounded new ,i have to say that i can´t take the amount of money he spent in those two machines but if to clean the both ,machines do clean perfect and only in 2017 he found time to clean my records ,i have to say they become new again , and i´m one of those guys that can´t hear a crackle in a whole LP ,so i guess that if one wants the records real cleaned is buying the Pro-Ject machine ,it cleans and vacums the cleaning fluid in the moment next to being cleaned and a ultra-sonic machine both do clean perfect any record if it´s cleaning it needs , destroyd records are not cleaned and sound new ,those are garbage