Boondocking in S Arizona desert and Rattlesnakes

We want to buy some snakebite gators to wear around the bottom half of our legs when out and about in the desert ... we're tired of "worrying about snakes" all the time out there. I have snow skiing gators but am not sure these would protect against snakes bites.

Does anyone know what kind we should get (for desert use - not too hot) and where to get them?