If you can safely catch them or have someone catch them for you I would just relocate them to a unpopulated area away from humans.
I would first do as Stormyva said to do and you may not even have to relocate them. I know there are a few people here that would love to come and get them for you. I bet if you bought BWSmith a airline ticket he would come and take all the rattlesnakes home.
Take care,
Tom
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