Your rugs of course.
I have a pretty big area rug on the porch that gets lots of use because the kids go over it as they come in and out the house. It gets vacuumed all the time. But I decided to haul it outside and beat it out.
I am horrified at the amount of dirt that came out.
On a good note, the kids had a blast whacking it with tennis rackets and baseball bats. LOL
I will be taking it out for a beating more regularly from now on. Any tips for keeping those rugs clean. We are going to rent a machine to do do the rest of the carpeting. I really wish I could take it out back and beat the dirt out of it too.