I'm looking to hike the Grand Canyon (found out that as a single I do have a good shot at securing the permit!), and now I'm trying to make sure I carry as little as possible on said hike. First thing I'm thinking about ditching is a tent.

I figure in May, its definitely not going to needed from a warmth perspective, and I was thinking about just taking a simple tarp to keep out any rain that might fall.

Here's my concern. I'd rather not wake up with any companions in my bag. I do believe if i woke up with a scorpion, snake, or spider in my bag, I would be a bit, well, freaked out.

If I sleep in the open in the desert, am I likely to have an unwelcome guest?