Do I have to use bags for my trash?

I don’t have a lot of stuff I throw in the trash. Usually it’s just small things like wrappers, used napkins, or stuff I swept up; stuff I can’t recycle. None of it is stuff that can rot or get stuck on anything. Putting trash in plastic bags is obviously bad for the environment let alone costly, and I don’t want to invest in any biodegradable bags because those are even more expensive. Can I just take my trash bin to the dumpster without any bag media?