I be expect it to be kind of worthless . but at worst I know the swiffer pad would sweep like the Mint but a lot cheaper because this one do not have that fancy navigation . on we hard wood floor it suck up dust , sand -lrb- volleyball court : -rrb- -rrb- , and cat hair efficiently -lrb- but skip the cat toy and ribbon -rrb- . in we 1250 sq. foot apartment it travel everywhere , get the little bit of cat litter outside the litterbox , and the dust bunny from under the chair and couch . definitely worth $ 44 . do not compare it to a $ 600 Roomba . I be a computer engineer , and I can not wait to add all of the high price feature to this one on the cheap ! if all go well I 'll write a blog and how-to about it ! I plan on replace the mcu\/software with open source code , give it a charge base station and scheduler , extend the run time , speed up charge time .