Back yard..parasites?

[lord jackel]

Is it a bad idea to let my snake out in the back yard? I mainly put him on a warm rock and let him heat up a bit and relax before he roams around a bit before putting him back in the tub.

Is there a danger of mites/parasites?

In most yards not really (mites are host specific)...There is more of a risk from what you put or leave in the yard (fertilizer, bug spray, dog poo, etc.)