I have one in a cage with the tiger salamanders, and when ever I loose a bp in that room I find it in a week or so in their cage in the waterfall. The salamanders tank is a 55 gallon fish tank and the top is open in the back where the filters use to be. The waterfall is on one side of the tank, nothing fancy but makes a nice sound. Basically the bp's seam to like something about it because I have found them soaking in the base of it the two times I have lost one (not the same snake twice).