I think rattlers are neat, but antivenom is like 18 grand. I had snake gaiters on once, and they worked. But the SOB bit "me" above the boot line and I was four miles on foot -- so I kill every rattler I'm aware of.
Years ago when moving our pup was bitten by a rattlesnake in New Mexico at a rest stop. Took her to a vet in Santa Rosa and he had me go to the pharmacy for 3 vials of anti-venom. $15 a vial at that time. Saved the pup's life.
Some species of rattlesnake are protected here.