My mom was complaining that the city has limits on how many leaves that they'll pick up, and she's got bags and bags of leaves stuffed into black garbage bags. This seems like a problem that should have some kind of backyard solution. I've done a cursory search, and see that leaves are very compostable. They can also apparently be turned into "mold", though I don't fully understand what this means. But I also see that there is a lot of variety in compost bins, and they're quite expensive. So I'm wondering: what's the best strategy for making leaves go away? She's not specifically interested in the product of the leaves, she just wants to find somewhere to put them after she rakes them up. Any ideas?