You all laugh.
I have seen this all too often. It is getting better but i do deal with this, as being in the used car market. I see this mess and then it is only half done, missed spots, wiped over dirt etc. How you say solvent dressing?
The fast way is to take my Las-Stik dust cloth and wipe it around, and because it doesn't dry, it moves to the next spot and it looks clean, until the next guy is paid to clean it. Then all the dirt starts to show as a nasty oily mess.
The proper way is to strip it with a good cleaner and start over.
They use this junk because it hides dirt.