Plastic #7 (Other) Landfill (Trash) Cart #7 is a catch-all for all plastics not made of #1-#6 resins. Flexible plastic packaging, soft plastics and film plastics are not accepted in the recycling and go in the landfill cart. We can only recycle rigid plastic containers like bottles, tubs and buckets that are labeled #1, #2 or #5. Biodegradable Plastic Is Not Recyclable Vegetable-based plastics such as PLA are often labeled #7, but they are not recyclable. Find out what to do with biodegradable bags and compostable cups, plates & utensils.