My idea to predator proof

[Broknarrw]

I have ordered a 5x12 coop/run which will have metal slopped roof.
I was originally going to put hardware cloth underneath but it was explained that would eventually rust.
So the plan is hardware cloth 2 feet around the whole thing. Including the corners.
Then I was thinking getting the wire flower fences which I would put around the 2 foot barrier . The bases go another 6 inches into the ground but I am thinking while I'll keep most out, rats and mice will likely tunnel in.
Any suggestions on my ideas on this?

 

[KyCoop]

Hardware cloth will not rust. It will oxidize but wont rust for a very long time. Maybe they were thinking of chicken wire.
If your thinking of keeping digging critters out you will need to bury an apron 12 to 24 inches out from your run and then go up the sides.
I'm not sure what flower fence is but sticking directly down 6 inches in the ground will not keep anything out.

A picture of your setup would help.