Don't forget that nothing (OK, almost nothing) biodegrades in most modern municipal landfills, which are designed and maintained specifically to be as dry as an Egyptian tomb. That fork will be there for about 100 years before it finally breaks down.* So, throw those used biodegradable utensils in the compost pile, not the regular trash (or include with lawn waste, if your community separates that out for community composting).
* Exception made for bioreactor landfills, which are designed to keep the trash wet, in a controlled fashion, and are claimed to biodegrade materials in about 10 years. I don't know whether any landfills in the Chicago area are bioreactors, and offer an LTH Research Challenge to any who will take it on.
JiLS