This whole thread just seems ridiculous and the facts match my opinion. More and more people are living in the southwest and in supposed rattlesnake country. The average number of deaths per year is about 5. That is way less than the number dying from a lightening strike. The risk is absolutely negligible when compared with the risk of death driving an RV or a car or even walking the dog. Forget rattlesnakes. Instead consider yourself lucky if you see one.
Where I live in Nevada the veterinarians were treating one dog a week for rattle snake bites. I suspect the dogs did not consider themselves lucky to see one nor the owners. It appears that your assessment of the west and the snake issues are borne from a lack of knowledge.