i love my SWIFFER SWEEPER VAC. i also have very DARK wood floors and this contraption is great for sucking up crumbs and hair before you SHARK. i use it in the bathroom before i sanitze and in the kitchen too. i have girls with lots of hair and i will say, it sucks the hair up. the battery is rechargeable and really should be charged after a couple uses. my SWIFFER hangs on a nail, just outside the door going into the garage, close to an outlet so it's always ready to go.