Not powerful enough to chop up cookies into crumbs. Takes several minutes to do, whereas my previous chopper of the same size only took about 30 seconds. The lid also does not form an adequate seal. When chopping dry items like cookies, the dry crumbs/powder gets all up along the lid rim. Some actually gets ejected out during the chopping process, and a lot more falls out when you open the lid afterwards. The result... Crumbs everywhere. I never had issues like this with my previous chopper of the same size. I have not tried to use this for wet foods yet. I really don't want to deal with the mess after seeing what it did with the dry goods. After only two uses, it has found it's permanent home at the back of the closet. Maybe good if I need a backup chopper someday, but I will be purchasing a different brand for everyday use. Very disappointed.