Hello Richard,
I did the Home Depot (well, actually Lowes) modification today.
I'm not sure what type of material that you are looking for, but if you are thinking about the black plastic mesh, you can gently bend the mesh and insert it into the grill opening. Then, simply attach with zip ties.
If you are looking to install the metal mesh, then I believe you will have to remove the front fender. I believe if you do a search, there is a member who removed a 2009 front bumper and installed the metal mesh. None the less, even if you find bumper instructions for, say a 2008, I would think that the mounting points, and the fitting used, would be similar to the 2009+, even though the bumpers are different.
I hope this helps,
Andrew