How to chase out a black snake?

We have a cement block out building that used to be a chicken coop long ago. I would like to fix it up for next Spring as either a coop or a garden shed. There is a huge black snake living in the building - what is a humane way of getting him to leave?

How to chase out a black snake?
If you have a snake living there it is because it has a food supply such as mice, moles, rats, etc. Leave it alone and when it removes the food sources, it will leave of its own accord.
Reply:Sulfur. Get it at a store selling camping supplies or pharmacies.

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