people are so helpful...here are some of the responses on CL

Without upsetting the balance of nature (ie: killing the snakes) they can be caught easily with a length of PVC and a loop of cord at the end. We have moved our snakes to an area that we do not travel, with no mishaps. If we had the time, it would be no problem to show you the trick. Good Luck. William at....

I have done this type of thing before and can do it safely. As long as you know the location of the snake and her offspring it should be no problem. King snakes will not neccesarily solve this problem. If you wish you can call me...Dave at ....

 kingsnakes are more expensive than you might imagine. their existence outside of nature is regulated by fish and game. The Real Deal for all snakes who rattle is shoot first and ask questions later, much later. A very useful tool around rattlesnakes is a 4-10 shotgun. It is very fatal for such vermin and mommie can handle it all by herself. Snakebite can easily be fatal to children, old folks, and pets. A 4-10 can be legally and easily obtained in your town on El Camino. In the meanwhile you will be waiting to comply with assinine, needless, state law. 30 days. try Walmart for boxes of mothballs, buy SEVERAL. Scatter them liberally in a wide swath around your house and where the pets and children play. Do Not Overlook the places where you have water, they will come to it. The mothballs defeat the snakes ability to navigate by detection of movement and heat sensing by their tongue. Be safe, make rattlesnakes sorry.