Why Loose Shreds Are a Problem
Loose shredded paper is too small for the sorting equipment at a Materials Recovery Facility (MRF). The shreds fall through the screens, blow around and make a mess, and contaminate other material streams. Because of that, many curbside programs won't accept loose shredded paper at all. Shredding also shortens the paper fibers, so shredded paper can only be recycled a limited number of times.
How to Recycle It — Contain It
If your program does accept shredded paper, it almost always has to be contained, not loose. The most widely accepted method is to put the shreds in a paper bag or cardboard box and staple or tape it shut. Some programs allow a clear plastic bag (so the facility can see the fiber) as the one exception to their no-plastic-bags rule — but many others reject plastic bags entirely and send them to the landfill. When in doubt, use a paper bag, and check your local rules first.
Better Alternatives
Often the easiest options aren't curbside at all. Clean shredded paper is an excellent carbon-rich "brown" for home composting, and it works great as packing or void-fill material. Many communities also run shred-day events or mixed-paper drop-off bins that bale the paper for recycling. Note that shredding sensitive documents for security is a separate service — see our document shredding guide for where to do that.