This comes via an article in the Washington Post:
When cleaning, resist the temptation to put things in boxes and bags as a way to reduce clutter. Let's face it, you aren't going to remember what you put where and yo0u'll be less likely to look for things because you'll have to dig through a ton of bags or boxes.
As much as possible, make it a point to avoid putting things in boxes or bags unless those containers are a final resting place — a box to donate or a garbage bag or a storage crate. After all, if you don't have a place to put something, do you really need it?