Ok, we have 3 tanks. My husband has put foil over the top, the heat lamp is directly over the water bowls, we wrapped black contact paper around the 2 sides and back (from theoutside of course), we mist, we have a humidifier....and the humidity won't go higher then 40 (staying between 33and40). We finally put some moss in one of the hides to make a humidty hide. But what can we do to boost the humidity in those tanks?!?
Stop trying to raise the humidity in the enclosure.
Provide and maintain a humid hide. 40% humidity is not going to harm your snake.
What will harm your snake is restricting air circulation and promoting conditions in which bacteria will thrive.