Oh yeah definitely leave it in. Its not about whether or not your BP uses the hide on a regular basis its about creating the proper environment. What if your thermostat in your house malfunctions or someone turns up the heat without you noticing. If your house is 5 degrees warmer your snake might want to move to the other side. What if you thermostat or rheostat malfunctions, where will your BP seek refuge. Definitely leave the second hide if you have the space and its not hurting anything.