A cyclone bin assembly comprises a dirt collection chamber in communication with a dirt outlet of a cyclone chamber. The dirt collection chamber comprises a first and second opposed ends and comprises a first and portions. The dirt outlet is positioned adjacent the second opposed end of the dirt collection chamber. The first and second portions may comprise discrete chambers that are separated from each other by a passage extending between the dirt outlet and a wall of the dirt collection chamber. The first and second portions may have first and second sides. The first side is positioned adjacent the passage and the second side is angularly spaced from the passage. The second portion has a divider wall that extends towards the second opposed end of the dirt collection chamber from the first opposed end of the dirt collection chamber. The divider wall may be spaced from the second side.