The Smartphone Sorting Guide

The most powerful tool is already in your pocket

You don’t need an engineering degree to recycle well. The most useful recycling tool on Earth is the smartphone in your hand: stand in front of a bin, look up the item, and act with confidence.

This guide gives you the honest version — not a slogan. Recycling rules genuinely vary by where you live, so the goal is to teach you how to read an item and where to check, not to memorize a single magic symbol.

Step 1 — Climb the Gratitude Hierarchy first

Before “which bin,” ask “does this need a bin at all?” Recyclopedia ranks every disposition on a hierarchy, best to last:

Reuse → Repair → Repurpose → Donate → Recycle → Compost → Dispose.

Recycling is good, but it sits below keeping the thing in use. A jar you reuse, a device you repair, or clothes you donate all beat the recycling bin. Reach for recycling when the higher rungs genuinely don’t apply.

Step 2 — Read the item (resin codes, honestly)

Most rigid plastics carry a chasing-arrows symbol with a number from 1 to 7. Here is the truth that trips up millions of people:

• That number is a resin identification code — what the plastic is made of. It is not a promise your local program accepts it. (This is myth #1 on our Myths board.)
• #1 PET (bottles) and #2 HDPE (milk jugs, detergent bottles) are the most widely accepted curbside plastics in the world. Empty, rinse, and recycle them — don’t trash them.
• #3–#7 are accepted far less often and vary wildly by city. Check before you bin.

For paper, glass, and metal, the same principle holds: clean and dry beats dirty, and local rules decide the rest.

Step 3 — Know curbside vs drop-off

Some things are recyclable but not in your curbside cart:

• Plastic bags and film clog and break sorting machines. Take them to store drop-off bins (many grocery chains have them) — never the curbside bin.
• Batteries, electronics, light bulbs, and motor oil are drop-off or hazardous-waste items. Use the Lookup or Donate Electronics pages to route them safely.

Step 4 — The one rule that matters most

When in doubt, leave it out.

“Wish-cycling” — tossing something in recycling and hoping — is the single most damaging habit. One wrong item can contaminate an entire load and send real recyclables to landfill. If you’re unsure, keep it out of recycling and look it up.

A note on compostable plastics (PHA / “certified compostable”)

You’ll increasingly see cups and packaging labeled PHA or BPI Certified Compostable. These are plant-based plastics that can break down — but only in industrial composting facilities with sustained high heat, not in a backyard pile and not in a landfill.

The honest catch: this only helps if your city actually runs an organics/compost program that accepts them. If it doesn’t, a “compostable” cup behaves like regular trash. So:

• If you have municipal composting that accepts certified compostables — use it.
• If you don’t — treat it as trash, and don’t put it in the recycling bin (it contaminates plastics recycling).

Check your local program. The label tells you what something could do, never what your city actually does.

Quick check — make sure the real-world rules stuck.