Vinyl foibles

I'd like to make this a space to ask questions about vinyl problems you're having trouble solving. I have a lot of questions, but I think it's better if we ask one at a time, or else I think we could have long lists.

Here is my first question. I have a Degritter album washer. I think it works great. I wash all my albums once, but not before I play them again and again.  Somehow, though, and this includes new albums no one else has ever touched, they pick up ticks and what sounds like scratches. I rewash the album and it sounds like new again. I only touch albums by their edges. How do inner bands become so dirty that sometimes a smudge can last a minute or more?  I've been playing vinyl albums for more years than many of you have lived, and I have learned to be very careful with vinyl. Are there vinyl gremlins haunting my album shelves?