A single Little Trees Cherry Blast Fiber Can. Cherry Blast is a blast of juicy cherries that makes a sweet and tart fragrance. The Fiber Can is a small canister air freshener from Car-Freshner, the makers of the classic hanging Little Trees, and is made using 50% recycled Little Trees fibre. Little Trees rates each can at up to 60 days of fragrance, although temperature and airflow affect how long and how strongly it lasts; open or close the lid to set the strength. The compact can sits in a cup holder, on the dashboard shelf, under a seat or on a shelf at home, and works well in laundry rooms, bathrooms, garages and pet areas.