This is quite possibly the worst and potentially most dangerous piece of advice I've ever seen given on this Forum...and you went out of your way to give it twice in the same thread? Tell me Robin, is that how you find your BPs after you let them have the run of your place? (No, I haven't forgotten that little tip of the day from you, either)
Glad you canceled this idea. It was a tremendously bad piece of advice.
Are you positive the shed you found was from your lost BP? Finding snake shed in a attic is not unusual. Just something to consider.
No, Ma'am. That is just one of the many, many places he could have gone. I wouldn't be so quick to exclude other areas of the house.
Don't give up hope and keep searching.