"Drop off centers are the last type of recycling center, where the recyclables are carried to a central location. Although these are the easiest types of recycling centers to establish, they might be less predictable or stable in terms of supply. Recycling is good for the environment and can create countless new jobs. Regardless of which kind of recycling you use, it is surely not a wasted effort. This is from an article that appeared on All Green Website: http://www.allgreenrecycling.com/blog/types-of-recycling/"