Boondocking in S Arizona desert and Rattlesnakes

I have lived in the desert SW most of my life and only had one encounter with a rattlesnake and he went one way and I went the other. Lucky I heard him rattle and was alerted. Now in Washington I've had a couple encounters with black bears and they went one way and I went the other.
Now if you want to worry about something, spiders are more likely to come visit. And they go where ever they want. Scorpions are another SW treat, they like boots.