Generally not a great idea IMO. You never know what sort of pesticides might have washed in even if you don't personally use them, and going out in the sunshine to an unfamiliar area can be pretty stressful for BPs that prefer to stay hidden in the dark 95% of the time. Hiding in a dark hole seems like a miserable life for you and me, but it's really how BPs prefer to spend their time.

Plus, it only takes a second of looking away for a snake to disappear on you. They're only slow till they decide to motor. Just the risk of one trying to bolt is enough to keep me from taking any of mine outside.