I grew up in the oil and gas fields near Bakersfield. My Grandfather always carried a shovel in the trunk of his work car and we decapitated every rattlesnake we came across. There was never a shortage. My Dad and a Brother live in the Sierra Foothills. They kill 5-6 snakes each year in their yards (this is the time they become very active, just out of hibernation). They have never had a shortage either. I have crossed paths while Deer hunting and fishing a great stretch of the South Fork of the Merced River where I have killed 6 in one day. Although there are great trout there many people do not fish that area due to the rattlers. On one trip we tried to ease around a Rattler and gave it plenty of room. It came after us! I don't know if it had never seen a human before but it was not intimidated by fishing poles. Thank goodness there were plenty of rocks. My most recent encounter was Turkey hunting last year. It was rattling between me and where I needed to go to work a Gobbler. Needless to say I found another route. There is a lot of good information regarding what to due if bitten. Snake bite kits are not always the answer.