If I spread moth balls around my property will it repell snakes

No.

I looked it up and sites said there are no natural snake repellants but you can buy snake repellants one brand was Liquid Fence.

They have stuff called " Snake Away", it supposedly works , but not on snakes that feed on carion . Lime works too. Get the powdered type.

We live in the middle of "snake country", and our best snake deterrant is our dog Joe. He's on duty all the time.