These handy little machines roam about your home searching for errant crumbs to devour, pet fur to suck up, and whatever else they discover and fit into their little bodies. They do not whine and complain about how much they hate to vacuum the carpets. Plus, they not bump into everything in sight leaving dents, nicks, and scuff-marks. Nowadays hoovers have been modernized and completely revived. Vacuum cleaners use an air pump to make a vacuum that sucks within the dust and particles from flo...