Top 10 Most Littered Items Email This year’s World Clean-Up Day will be held on September 21. Each year for the clean-up, volunteers from around the world pick up litter in their communities. In conjunction with the U.S. National Clean-Up Day and the International Coastal Clean-Up, millions of people from 150 countries unite through small local actions against illegal waste. From streets to forests to beaches, litter is everywhere. It’s also expensive — Keep America Beautiful has estimated that litter costs local communities and businesses in the U.S. at least $11.5 billion each year in clean-up and prevention. To make matters worse, litter often leaches pollutants into the environment, and it harms wildlife, as well. Litter is often carried by wind or rain into rivers and storm drains, where it pollutes our waterways. Recent research from the Netherlands indicates that over 550 marine species have been affected by plastic litter, either by becoming tangled in it or eating it. Since this year’s clean-up is right around the corner, let’s take a look at some of the most commonly littered items. Here are the top 10 items picked up by Ocean Conservancy volunteers last year: 1. Cigarette Butts 2. Food Wrappers (Candy Wrappers, Energy Bar Wrappers) 3. Plastic Bottles 4. Plastic Bottle Caps 5. Plastic Grocery Bags 6. Other Plastic Bags 7. Straws 8. Plastic Takeout Containers 9. Plastic Lids 10. Foam Takeout Containers To join this year’s World Clean-Up Day, find a clean-up group near you.