Biased retainer assembly for waste container

A retainer assembly for a waste container comprising:

• a frame defining an opening, the frame configured to mount to the waste container having an interior, and the frame having a side adapted to face the interior;
• a plurality of finger brackets on the frame, spaced from each other and positioned around most of the opening, each finger bracket having a pin;
• a set of plate like fingers, each plate like finger having a proximal end pivotally mounted to the pin of each finger bracket and movable between a retaining position where a distal end extends at a first angle from the side adapted to face the interior toward the opening, and an open position where the distal end is free from the opening;
• and
• a torsion spring mounted between each finger bracket and each plate like finger to bias the plate like finger to the retaining position, wherein at least a portion of the pin is circumscribed by the torsion spring;
• wherein each of a subset of plate like fingers in the retaining position has a proximal portion extending from the finger bracket and a distal portion that extends from the proximal portion at a second angle relative to a first portion.