This handy little device is designed to clean crumbs and other things from your computer keyboard. He does it. However, I've read that it's also useful for removing crumbs from tables, countertops, etc., so I decided to give it a try. As a "desk vacuum cleaner" it works very well! The teat surprises with its size. It does a good job of picking up dry crumbs and powder from countertops, slabs, countertops and similar surfaces. It certainly doesn't scrub stuck-in dirt or pick up anything wet, but it's not meant to be. I didn't find the included instructions particularly clear or helpful. It took me a while to figure out how to open it up to put the batteries in. Opening it to clean the inside is also a little inconvenient; In fact, it's so well made that the pieces fit together tightly enough that it's a little tricky to take apart! As with batteries, I was afraid of breaking them. I finally figured out how to take it apart. This little vacuum cleaner is one of those things I didn't know I needed until I got it. This is the easiest way to remove crumbs without mostly ending up on the floor!