Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Three Big Hairy Dogs

"Eh!", I figured, "this will never handle all the dog hair I have to deal with, but at least it will get all the dirt they track in..." Wrong! This thing is amazing! It gets everything! I was used to my grandmother's sweeper so I figured that this would maybe be as good. It's better. There are two disc-shaped rollers in the front that are geared to spin the dirt from corners and under cupboards towards the center where a big roller like a rolling pin picks it all up. It's thorough, effect, and easy to empty. It hangs on a nail in my pantry so I can grab it easily without hauling out my big vacuum and 1-2-3 it makes quick work of everything. It's quiet, effective, and worth every penny.