What happens to the materials that aren’t recyclable? Don’t they just get recycled anyway?

As much as we would like to recycle everything we receive, it’s a matter of market demand. We cannot collect and process materials if there is no one to buy them. Similarly, if we include too much “junk” with our materials (such as plastic kiddy pools or laundry baskets mixed in with milk jugs), we risk losing buyers or getting a lower price for our materials. Undesirable materials and contaminants are landfilled.