You can throw it on the curb you don't have to take it to the landfill or anything.

Call your city disposal and they will tell you exactly how to handle this procedure.

I am a broke college student and I live in the basement of a house. My mattress sits on the floor and we have gotten a lot of rain this year. I found mold on the bottom of my bed and I need to throw it out. Do I just leave it on the curb on our trash day or do I have to take it to the dump myself?

Also, I live in Minneapolis, MN (if that even matters).