@GraPhiX, you nailed the style and look of the bins, but, what lotgd is saying is, they are too high poly for use in games. These are essentially 'filler' assets that won't really play an integral part of the game, so, they don't need to be as detailed (mesh wise). My advice would be to include the word 'Litter' in the texture and allow the normal map to give it a bit of depth.
If you are using Blender to make these, then, the in engine font creator, makes some pretty awful meshes for text and they are always stupidly high poly. I would remove the mesh versions and just put it in the texture.
Looking at the file structure for these bins, I am assuming that you may be struggling with UV mapping? If you are, I can help with that.
Before GameGuru was named as such, it donned the name of FPSC Reloaded. I mention this, as I made a few tutorials, trying to teach people how to make models and get them prepared for said engine. If you are struggling, please feel free to watch these, I believe they might help.
Great looking start mate! With a little bit of work, these will be perfect for games.