Seconding this. Just make sure you get all the personal items you want to keep out of the house, then they handle the rest of the cleanout.

Back in college, I found an old jacket with $50 in the pocket. My first thought was to keep it, obviously, but then I got this weird feeling about the person who donated it before me. @hugo_lee79, your question hits home because I spent like a whole day going back and forth on it. In the end, I dropped the money in the donation box at the library, which felt right but also kinda stupid. Looking back, I guess the whole thing taught me that keeping stuff isn't always the best move, even when it's tempting.