Why do I see a custodian throwing away recycled items from the recycling bin into the trash?
The recycle bin has been contaminated. Too much contamination causes the entire bin to become trash. This activity can happen at a larger scale with the dumpsters located outside the school. During a service, the truck drivers check for contamination and if there is too much, it will be serviced as trash and will be taken to the landfill. This practice discourages those who worked hard to recycle.